Relevant bibliographies by topics / Silicon catalysis

Academic literature on the topic 'Silicon catalysis'

Author: Grafiati
Published: 7 July 2024

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Silicon catalysis.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Journal articles on the topic "Silicon catalysis":

1

Maruyama, Benji, and Fumio S. Ohuchi. "H2O catalysis of aluminum carbide formation in the aluminum-silicon carbide system." Journal of Materials Research 6, no. 6 (June 1991): 1131–34. http://dx.doi.org/10.1557/jmr.1991.1131.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
Aluminum carbide was found to form catalytically at aluminum-silicon carbide interfaces upon exposure to water vapor. Samples, composed of approximately 2 nm thick layers of Al on SiC, were fabricated and reacted in vacuo, and analyzed using XPS. Enhanced carbide formation was detected in samples exposed to 500 Langmuirs H2O and subsequently reacted for 600 s at 873 K. The cause of the catalysis phenomenon is hypothesized to be the weakening of silicon-carbon bonds caused by very strong bonding of oxygen atoms to the silicon carbide surface. Aluminum carbide formation is of interest because of its degrading effect on the mechanical properties of aluminum/silicone carbide reinforced metal matrix composites, as well as its effect on the electrical properties of aluminum metallizations on silicon carbide layers in microelectronic components.
2

Baráth, Eszter. "Selective Reduction of Carbonyl Compounds via (Asymmetric) Transfer Hydrogenation on Heterogeneous Catalysts." Synthesis 52, no. 04 (January 2, 2020): 504–20. http://dx.doi.org/10.1055/s-0039-1691542.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
Based on the ever-increasing demand for optically pure compounds, the development of efficient methods to produce such products is very important. Homogeneous asymmetric catalysis occupies a prominent position in the ranking of chemical transformations, with transition metals coordinated to chiral ligands being applied extensively for this purpose. However, heterogeneous catalysts have the ability to further extend the field of asymmetric transformations, because of their beneficial properties such as high stability, ease of separation and regeneration, and the possibility to apply them in continuous processes. The main challenge is to find potential synthetic routes that can provide a chemically and thermally stable heterogeneous catalyst having the necessary chiral information, whilst keeping the catalytic activity and enantioselectivity equally high (or even higher) than the corresponding homogeneous counterpart. Within this short review, the most relevant immobilization modes and preparative strategies depending on the support material used are summarized. From the reaction scope viewpoint, metal catalysts supported on the various solid materials studied in (asymmetric) transfer hydrogenation of carbonyl compounds are selected and represent the main focus of the second part of this overview.1 Introduction2 Synthesis of Chiral Heterogeneous Catalysts2.1 Immobilization of Homogeneous Asymmetric Catalysts2.1.1 Immobilization on Inorganic Supports2.1.2 Immobilization on Organic Polymers as Supports2.1.3 Immobilization on Dendrimer-Type Materials as Supports2.1.4 Self-Supported Chiral Catalysts: Coordination Polymers2.1.5 Immobilization Using Non-Conventional Media2.2 Chirally Modified Metal Surfaces for Heterogeneous Asymmetric Catalysis3 Examples of Transfer Hydrogenation on Heterogeneous Catalysts3.1 Silicon-Immobilized Catalysts3.2 Carbon-Material-Immobilized Catalysts3.3 Polymer-Immobilized Catalysts3.4 Magnetic-Nanoparticle-Immobilized Catalysts4 Conclusions
3

Hoop, Kelly A., David C. Kennedy, Trevor Mishki, Gregory P. Lopinski, and John Paul Pezacki. "Silicon and silicon oxide surface modification using thiamine-catalyzed benzoin condensations." Canadian Journal of Chemistry 90, no. 3 (March 2012): 262–70. http://dx.doi.org/10.1139/v11-157.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
The benzoin condensation that involves the umpolung coupling of two aldehyde groups has been applied to the formation of functionalized silicon and silicon oxide surfaces using thiamine and other N-heterocyclic carbene (NHC) catalysis in water. This bioorthogonal conjugation of an aldehyde to a modified silicon or silicon oxide surface has been monitored and characterized using X-ray photoelectron spectroscopy and IR spectroscopy. NHC catalysis was found to be efficient in water mediating full conversion of the aldehyde functionalized silicon oxide surfaces at the interface.
4

Shteinberg, Leon. "CATALYSIS BY PHOSPHORUS AND SILICON COMPOUNDS IN THE SYNTHESIS OF OXYNAPHTOIC ACID ANILIDES." Ukrainian Chemistry Journal 89, no. 1 (February 24, 2023): 46–59. http://dx.doi.org/10.33609/2708-129x.89.01.2023.46-59.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
Catalysis of the acylation of aniline with 3-­hydroxy-2-naphthoic, 1-hydroxy-2-naphthoic, 2-hydroxy-1-naphthoic and 1-hydroxy-4-naphthoic acids by phosphorus P(III) and silicon Si(IV) compounds leads to the formation anilides of the corresponding hydroxy­naphthoic acids under mild conditions (ortho-xylene, 146.5–147 °C) in almost quantitative yield. Among P(III) phosphorus trichloride and tribromide; phosphorous, 1-hydroxyethyli­de­ne-di­phos­phonic, pyrophosphorous and me­ta­phos­phorous acids; trimethyl-, dimethyl- and diethylphosphites; phosph(III)azan proved to be active catalysts; among Si(IV) – tri­chloro-(methyl)silane, dichloro(ethyl)silane, dichloro­(dimethyl)silane, tetrachlorosilane and tet­ra­ethoxysilane are active. The catalysts were used in an amount of only 2% mole. from hydroxynaphthoic acid, which is 15–35 times less than the conventional use of the same compounds as condensing agents in the synthesis of carboxylic acid arylamides. P(V) compounds, thionyl chloride, and sulfuryl chloride practically do not exhibit catalytic activity. The presence of catalytic activity only in P(III) compounds, capable of forming phosphorous acid in the reaction mass, does not contradict to the previously proposed mechanism of P = O-nucleophilic catalysis for the reaction of substituted benzoic acids with aniline catalyzed by PCl3. In general, the use of P(III) and Si(IV) compounds as catalysts in the preparation of hydroxybenzoic and hydroxynaphthoic acid anilides successfully complements the range of catalysts, based on Ti(IV) compounds, previously used in the formation of substituted benzoic and naphthoic acid anilides (containing no aromatically bonded hydroxy group), allowing to create a universal method for their synthesis.
5

Oestreich, Martin. "Cluster Preface: Silicon in Synthesis and Catalysis." Synlett 28, no. 18 (October 27, 2017): 2394–95. http://dx.doi.org/10.1055/s-0036-1591626.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
Martin Oestreich is Professor of Organic Chemistry at the Technische Universität Berlin. His appointment was supported by the Einstein Foundation Berlin. He received his diploma degree with Paul Knochel (Marburg, 1996) and his doctoral degree with Dieter Hoppe (Münster, 1999). After a two-year postdoctoral stint with Larry E. Overman ­(Irvine, 1999–2001), he completed his habilitation with Reinhard ­Brückner (Freiburg, 2001–2005) and was appointed as Professor of Organic Chemistry at the Westfälische Wilhelms-Universität Münster (2006–2011). He also held visiting positions at Cardiff University in Wales (2005) and at The Australian National University in Canberra (2010). Martin Oestreich’s research focuses on silicon in synthesis and catalysis, the theme of the present SYNLETT Cluster. His early work centered on the use of silicon-stereogenic silicon reagents in asymmetric catalysis, and his laboratory continues to employ them as stereochemical probes in mechanistic investigations. His research group made fundamental contributions to catalytic carbon–silicon bond formation with nucleo­philic and, likewise, electrophilic silicon reagents, and Martin Oestreich is probably best known for his work in silylium-ion chemistry. Recent accomplishments of his laboratory include Friedel–Crafts-type C–H silylation, transfer hydrosilylation, and kinetic resolution of alcohols by enantioselective silylation.
6

Wang, Shenghua, Chenhao Wang, Wangbo Pan, Wei Sun, and Deren Yang. "Two‐Dimensional Silicon for (Photo)Catalysis." Solar RRL 5, no. 9 (August 19, 2021): 2100596. http://dx.doi.org/10.1002/solr.202100596.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Wang, Shenghua, Chenhao Wang, Wangbo Pan, Wei Sun, and Deren Yang. "Two‐Dimensional Silicon for (Photo)Catalysis." Solar RRL 5, no. 2 (February 2021): 2170021. http://dx.doi.org/10.1002/solr.202170021.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Walker, Johannes C. L., Hendrik F. T. Klare, and Martin Oestreich. "Cationic silicon Lewis acids in catalysis." Nature Reviews Chemistry 4, no. 1 (November 15, 2019): 54–62. http://dx.doi.org/10.1038/s41570-019-0146-7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Oestreich, Martin. "Silicon-Stereogenic Silanes in Asymmetric Catalysis." Synlett 2007, no. 11 (July 2007): 1629–43. http://dx.doi.org/10.1055/s-2007-980385.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Hrdina, Radim, Christian E. Müller, Raffael C. Wende, Katharina M. Lippert, Mario Benassi, Bernhard Spengler, and Peter R. Schreiner. "Silicon−(Thio)urea Lewis Acid Catalysis." Journal of the American Chemical Society 133, no. 20 (May 25, 2011): 7624–27. http://dx.doi.org/10.1021/ja110685k.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources
You might also be interested in the extended bibliographies on the topic 'Silicon catalysis' for particular source types:
Journal articles Dissertations / Theses Books

Dissertations / Theses on the topic "Silicon catalysis":

1

Chigondo, Fidelis. "Continuous flow synthesis of silicon compounds as feedstock for solar-grade silicon production." Thesis, Nelson Mandela Metropolitan University, 2016. http://hdl.handle.net/10948/4529.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
This thesis describes the key steps in the production of high purity (solar-grade) silicon from metallurgical-grade silicon for use in the production of photovoltaic cells as alternative renewable, environmentally benign and cheap energy source. The initial part of the project involves the development and optimization of a small chemical production platform system capable of producing alkoxysilanes from metallurgical-grade silicon as green precursors to solar-grade silicon production. Specifically, the main aim of the study was to synthesize trialkoxysilanes in continuous flow mode, although the synthesis on monosilane was also done in batch mode. The alkoxylation reaction was carried out in a traditional slurry phase batch reactor, packed bed flow tubular reactor and also attempted in a continuous flow falling film tubular reactor. The effect of key parameters which affect the silicon conversion and selectivity for the desired trialkoxysilane were investigated and optimized using ethanol as a reagent model. The synthesis was then extended to the other alcohols namely methanol, n-propanol and n-butanol. Copper catalysts which were tested in the alkoxylation reaction included: CuCl, Cu(OH)2, CuO and CuSO4. CuCl and Cu(OH)2 showed comparable activity in the batch mode but the former was more efficient in the packed bed flow tubular reactor. Cu(OH)2 could be used as a non-halide catalyst but its activity is limited to short reaction cycles (<10 h). The uncatalysed reaction resulted in negligible reaction rates in both types of reactors. High temperature catalyst pre-heating (>500 oC) resulted in a lower rate of reaction and selectivity than when slightly lower temperatures are used (<350 oC) in both reactors, although much difference was noticed in the packed bed flow tubular reactor. Synthesis in the batch reactor needed longer silicon-catalyst activation time, higher pre-heating temperature and higher catalyst amounts as compare to the packed bed flow tubular reactor. Reaction temperature and alcohol flow rate influenced the reaction in both methods. The optimum reaction temperature range and alcohol flow rate was comparable in both reactors (230 to 240 oC) and 0.1mL/min respectively. The effect of alcohol R-group (C1 to C4) on the reaction revealed that conversion and selectivity generally decrease with an increase in carbon chain length in both methods. Ethanol showed highest selectivity (>95% in batch and >97% in flow) and conversion (about 88% in batch and about 64% in flow) as compared to all other alcohols studied showing that it could be the most efficient alkoxylation alcohol for this reaction. Overally, the packed bed flow tubular reactor resulted in higher selectivity to trialkoxysilanes than the batch system. Performing the reaction under pressure resulted in increased conversion but selectivity to the desire trialkoxysilane diminished. Synthesis in a continuous flow falling film tubular reactor was not successful as it resulted in very poor conversion and selectivity. Monosilane was successfully synthesized from the disproportionation of triethoxysilane using homogeneous and heterogeneous catalysts in batch mode. The results obtained from homogeneous catalysis showed that the reaction can be conducted at room temperature. The heterogeneous catalysis method resulted in slow conversion at room temperature but mild heating up to 55 oC greatly improved the reaction. Conducting the reaction under neat conditions produced comparable results to reactions which were carried out using solvents. The disproportionation reaction was best described by the first order kinetic model. The results obtained in this research indicate that the packed bed flow tubular reactor can be utilized with future modifications for continuous flow synthesis of alkoxysilanes as feedstock for the solar-grade silicon production.
2

Beveridge, Nicola Louise. "Characterisation of silicon-silicon hydroxide catalysis bonds for future gravitational wave detectors." Thesis, University of Glasgow, 2012. http://theses.gla.ac.uk/3526/.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
The first generation of gravitational wave detectors are currently undergoing significant upgrades to increase their sensitivity by a factor of ten. These upgrades include the installation of quasi-monolithic silica suspensions in an attempt to reduce the thermal noise of the test masses and their suspensions. Fused silica fibres are welded to fused silica interface pieces, called ‘ears’, which provide suitable welding points onto the sides of the mirror when bonded to the mirror using the high strength chemical jointing technique of hydroxide-catalysis bonding. Plans are developing for the design of potential ‘future generation’ gravitational wave detectors. These detectors may operate at cryogenic temperatures to further reduce thermal noise. Silicon is a prime candidate material for use in the test masses and their suspensions because of its desirable thermo-mechanical properties in the cryogenic regime. With some adaptation, hydroxide catalysis bonding may also be a viable technique for use in third generation detectors; however, to evaluate its suitability it is essential to quantify both the strength of silicon-silicon bonds at cryogenic temperatures and the mechanical loss of such bonds, as this has a direct effect on the contributions of the bond to the overall thermal noise of a bonded suspension. To make bonding of silicon components possible, the bonding surfaces must ideally have a thin coating of SiO2, with which the hydroxide can react to form the bond. In Chapters 3 and 4, the strength of hydroxide catalysis bonds between silicon blocks at room and cryogenic temperatures is investigated. Chapter 3 investigates the minimum required thickness of SiO2 necessary for a successful bond. The bond strength, tested using a 4-point bend strength test, is found to reduce significantly with oxide layer thicknesses below 50 nm at cryogenic temperature. A Weibull analysis of the results showed a characteristic strength of approximately 41MPa at 77K and 35MPa at room temperature for samples with a minimum oxide layer of 50 nm. In chapter 4 the effect on the oxide layer deposition method and the purity of the silicon ingot on the strength of the bond are studied. Bend strength tests were performed on hydroxide-catalysis bonds formed between silicon samples of different crystallographic orientation and purity that had been oxidised using a range of methods. The three methods used were; dry thermal oxidation, ion beam sputtering and e-beam deposition. It was found that the method used influenced the strength of the resulting bond, with the e-beam deposited layers producing the weakest samples. It is postulated that the reason for the lower strength of the e-beam samples is correlated with the lower density of this type of coating compared with other coating methods. The mechanical loss of the bond between silicon cantilevers between 10K and 250K was measured in Chapter 5. The experimental set up is described, the results are presented and then analysed to establish an upper limit of 0.12 for the second bending mode below 100K. The lowest loss measured was 0.06 at 12K.
3

Leung, Jane Jing. "Molecular hybrid photocathodes based on silicon for solar fuel synthesis." Thesis, University of Cambridge, 2019. https://www.repository.cam.ac.uk/handle/1810/288001.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
Artificial photosynthesis is broadly defined as the process of solar energy conversion into chemical fuels and represents a promising route towards alleviating the global energy crisis. In this context, the development of photocathodes for the use in photoelectrochemical cells is an attractive approach for the storage of solar energy in the form of a chemical energy carrier (e.g. H$_{2}$ and CO$_{2}$-reduction products from H$_{2}$O and CO$_{2}$). However, molecular catalyst-based photocathodes remain scarcely reported and typically suffer from low efficiencies and/or stabilities due to inadequate strategies for interfacing the molecular component with the light-harvesting material, with benchmark systems continuing to rely on precious metal components. In this thesis, the straightforward preparation of a p-silicon|mesoporous titania|molecular catalyst photocathode assembly that is active towards proton reduction in aqueous media is first established. The mesoporous TiO$_{2}$ scaffold acts as an electron shuttle between the silicon and the catalyst, while also stabilising the silicon from passivation and enabling a high loading of molecular catalysts. When a Ni bis(diphosphine)-based catalyst is anchored on the surface of the electrode, a catalytic onset potential of +0.4 V vs. RHE and a high turnover number of 1 $\times$ 10$^{3}$ was obtained from photoelectrolysis under UV-filtered simulated solar irradiation at 1 Sun after 24 hours. Notwithstanding its aptitude for molecular catalyst immobilisation, the Si|TiO$_{2}$ photoelectrode showed great versatility towards different types of catalysts and pH conditions, highlighting the flexible platform it represents for many potential reductive catalysis transformations. The Si|TiO$_{2}$ scaffold was extended towards solar CO$_{2}$ reduction via the immobilisation of a novel phosphonated cobalt bis(terpyridine) catalyst to achieve the first precious metal-free, CO$_{2}$-reducing molecular hybrid photocathode. Reducing CO$_{2}$ in both organic-water and purely aqueous conditions, the activity of this photocathode was shown to be affected by its environment and reached record turnover numbers for CO production by a molecular photocathode under optimal conditions, maintaining stable activity for more than 24 hours. Critically, in-depth electrochemical and in situ resonance Raman and infrared spectroelectrochemical investigations provided key insights into the nature of the surface-bound Co complex under reducing conditions. While demonstrating the power and precision offered by such in situ spectroelectrochemical techniques, these studies ultimately alluded to a catalytic mechanism that contrasts with that reported for the in-solution (homogeneous) catalyst. Overall, this affords a distinct mechanistic pathway that unlocks an earlier catalytic onset and enables photoelectrochemical activity. Finally, in the context of improving product selectivity in molecular-based CO$_{2}$ reduction, polymers based on the cobalt bis(terpyridine) motif were synthesised and immobilised on inverse opal-type electrodes designed specifically to accommodate large molecules. Rational design of the polymers' co-monomers was aimed towards the provision of an artificial environment for the active complex that would influence product selectivity, which was ultimately demonstrated by the improvement of a H$_{2}$:CO product ratio of 1:2 (molecule) to 1:6 (polymer). Further studies of this all-in-one system included modulating its degree of cross-linkage as well as a CO$_{2}$ reducing demonstration photocathode on a Si|inverse-opal TiO$_{2}$ scaffold.
4

Tymowski, Benoît de. "Fischer Tropsch synthesis on conductive silicon carbide based support." Thesis, Strasbourg, 2012. http://www.theses.fr/2012STRAF019/document.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
La synthèse de Fischer-Tropsch (SFT) permet la transformation d'un mélange de gaz de synthèse, i.e. H2 et CO, issu des différentes matières premières (charbon, gaz naturel ou biomasse) en hydrocarbures synthétiques. Les catalyseurs généralement utilisés en SFT sont à base de fer ou de cobalt supporté sur alumine ou silice. Dans ce travail, le carbure de silicium (SiC) a été proposé comme nouveau support de remplacement pour la SFT. Les résultats obtenus ont montré que les catalyseurs à base de cobalt supporté sur du SiC, contenant essentiellement des mésopores, sont actifs et sélectifs pour la réaction de SFT par rapport aux catalyseurs traditionnels supportés sur alumine ou silice. L'activité en SFT peut être améliorée en utilisant de l'éthanol comme solvant d'imprégnation ou en ajoutant un promoteur tel que le ruthénium. Le dopage du support de départ par du Ti02 contribue également à une forte augmentation de l'activité en SFT grâce à la formation de petites particules de cobalt présentant une activité en SFT plus élevée. La forte interaction entre le Ti02 et le cobalt permet également d'améliorer d'une manière considérable la stabilité du catalyseur
The Fischer-Tropsch synthesis (FTS) allows the transformation of a mixture of synthesis gas, i.e. H2 and CO, into valuable liquid hydrocarbons. The catalysts generally used in FTS are based on iron or cobalt supported on alumina or silica. ln the present work, silicon carbide (SiC) has been proposed as a replacement media to traditional supports. The results obtained indicate that the mesoporous SiC containing cobalt catalyst exhibits a good FTS activity and an extremely high selectivity towards liquid hydrocarbons compared to other FTS catalysts supported on alumina or silica. The FTS activity on the Co/SiC catalyst can be improved by changing the impregnation solvent or by promoting the cobalt phase with trace amount of noble metal. The doping of the SiC support with Ti02 phase also significantly improves the FTS activity keeping a similar high selectivity thanks to the formation of small cobalt particles in contact with the Ti02 phase
5

Rae, James. "Copper-catalysed silicon and boron functionalisation of heterocycles and allenes." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/coppercatalysed-silicon-and-boron-functionalisation-of-heterocycles-and-allenes(a86718c0-18b4-4092-a2bd-b978797153db).html.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
Silicon holds a privileged position in organic chemistry as the carbon-silicon bond can be utilised in many important transformations. As such, developing practical and efficient methods for the enantioselective and regioselective insertion of silicon into organic molecules is a worthy challenge in chemical synthesis. To this end, we have developed an affordable copper-catalysed protocol for the asymmetric silylation of lactones, lactams and amides, providing silylated products with up to > 99:1 er and in good yields. Furthermore, we have demonstrated the synthetic utility of this protocol in the target synthesis of natural or biologically active molecules. We also present the first copper-catalysed silylation of allenes using a silylborane reagent. This affords useful allyl- or vinylsilane building blocks with high regioselectivity, efficiency and a large functional group tolerance. The allylcopper intermediates can be intercepted by aldehydes in a diastereoselective three-component coupling to furnish homoallylic alcohols. We extend this concept to the copper-catalysed three-component coupling of boron, allenes and imines, providing access to homoallylic amines with a vinylborane motif.
6

Pap, A. E. (Andrea Edit). "Investigation of pristine and oxidized porous silicon." Doctoral thesis, University of Oulu, 2005. http://urn.fi/urn:isbn:9514277759.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
Abstract While numerous publications deal with the properties and applications of porous silicon (PS), some of the related topics are not complete or could be investigated from different aspects. Therefore, the main objective of this thesis is to provide novel information associated with the optical and chemical properties of PS. For the investigations, various PS samples are manufactured by electrochemical dark etching of boron-doped p+-type Si wafers. Amongst others, (i) the wavelength-dependent refractive indices of freestanding PS monolayers having different porosities were obtained from optical transmission and reflection spectra in the 700–1700 nm wavelength range, and compared to those calculated from Bruggeman's effective medium approximation (EMA). The refractive indices of the PS samples are shown to be described well with the EMA. In addition, optical scattering at the air-PS interface was demonstrated. (ii) Multilayer stacks are created by alternating the porosities of PS layers within the same sample to form Bragg filters. The Bragg conditions of the filters are calculated and compared to optical transmission measurements. (iii) The oxidation of PS membranes in dry air is investigated with emphases on the reaction kinetics and on the structural changes of the porous matter. As revealed, oxidation proceeds faster in PS than in Si bulk. The formed SiO2 is amorphous and causes stress in the lattice of the residual Si skeleton. (iv) The effect of oxidation extent of PS layers on the growth mechanism of multi-walled carbon nanotubes (CNTs) is investigated. The density of the CNT network is found proportional to the oxidation extent of the substrates. (v) Finally, the chemically-reductive nature of PS is studied and exploited via the immersion plating method to deposit palladium and silver nanoparticles in the nanopores and on the surface of PS samples. The presented novel results have potential in silicon-based technologies, including integrated active and passive optical components (waveguides, filters, antireflection coatings, optical gas/liquid sensors), electronic devices (electrochemical gas/liquid sensors, diodes, field effect devices) and selective chemical catalysis (substrates, growth templates).
7

Wieting, Joshua Merlin. "Silanediol-Catalyzed Stereoselective Functionalization of Heterocycles." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1448891366.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Lee, Kang-sang. "New Concepts and Catalysts for Enantioselective Synthesis of C-C, C-Si, and C-B Bonds." Thesis, Boston College, 2010. http://hdl.handle.net/2345/1739.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
Thesis advisor: Amir H. Hoveyda
Chapter 1. The development of chiral monodentate N-heterocyclic carbenes (NHCs) is presented. Structurally varied twenty-eight new chiral imidazolinim salts, NHC precursors, were synthesized and characterized. Chapter 2. The first example of Cu-catalyzed enantioselective conjugate additions of alkyl- and arylzinc reagents to unactivated cyclic enones is presented. Transformations are promoted in the presence of 2.5-15 mol % of a readily available chiral NHC-based Cu complex, affording the desired products bearing all-carbon quaternary stereogenic centers in 67-98% yield and in up to 97% ee. Catalytic enantioselective reactions can be carried out on a benchtop, with undistilled solvent and commercially available (not further purified) Cu salts. Chapter 3. A new class of enantioselective conjugate addition (ECA) reactions that involve aryl- or alkenylsilylfluoride reagents and are catalyzed by chiral non-C2-symmetric Cu-based NHC complexes are presented. Transformations have been designed based on the principle that a catalytically active chiral NHC-Cu-aryl or NHC-Cu-alkenyl complex can be accessed from reaction of a Cu-halide precursor with in situ-generated aryl- or alkenyl-tetrafluorosilicate. Reactions proceed in the presence of 1.5 equivalents of the aryl- or alkenylsilane reagents and 1.5 equivalents of tris(dimethylamino)sulfonium difluorotrimethylsilicate. Desired products are isolated in 63-97% yield and 73.5:26.5-98.5:1.5 enantiomeric ratio (47%-97% ee). Chapter 4. An efficient Cu-catalyzed protocol for enantioselective addition of a dimethylphenylsilanyl group to a wide range of cyclic and acyclic unsaturated ketones, esters, acrylonitriles and dienones is presented. Reactions are performed in the presence of 1-5 mol % of commercially available and inexpensive CuCl, a readily accessible monodentate imidazolinium salt as well as commercially available (dimethylphenylsilyl)pinacolatoboron. Cu-catalyzed 1,4- and 1,6-conjugate additions afford the enantiomerically enriched silanes in 72%-98% yield and 90:10->99:1 enantiomeric ratio (er) with up to >25:1 of Z:E selectivity. Chapter 5. A Cu-catalyzed method for enantioselective boronate conjugate additions to trisubstituted alkenes of acyclic a,b-unsaturated carboxylic esters, ketones, and thioesters is presented. All transformations are promoted by 5 mol % of a chiral monodentate NHC-Cu complex, derived from a readily available C1-symmetric imidazolinium salt, and in the presence of commercially available bis(pinacolato)diboron. Reactions are efficient (typically, 60% to >98% yield after purification) and deliver the desired boryl carbonyls in up to >98:2 enantiomer ratio (er). In addition, metal-free, nucleophilic activation of a B-B bond has been exploited in the development of a highly efficient method for conjugate additions of commercially available bis(pinacolato)diboron to cyclic or acyclic a,b-unsaturated carbonyls. Reactions are readily catalyzed by 2.5-10 mol % of a simple NHC. A variety of cyclic and acyclic unsaturated ketones and esters can serve as substrates. Transformations deliver boryl carbonyls bearing tertiary as well as quaternary B-substituted carbons in up to >98% yield
Thesis (PhD) — Boston College, 2010
Submitted to: Boston College. Graduate School of Arts and Sciences
Discipline: Chemistry
9

Douglas, Rebecca Claire. "Aspects of hydroxide catalysis bonding of sapphire and silicon for use in future gravitational wave detectors." Thesis, University of Glasgow, 2016. http://theses.gla.ac.uk/7993/.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Mungondori, Henry Heroe. "Development of a visible light active, photo-catalytic and antimicrobial nanocomposite of titanium dioxide and silicon dioxide for water treatment." Thesis, University of Fort Hare, 2012. http://hdl.handle.net/10353/471.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
The aim of this study was to prepare composite materials based on titanium dioxide (TiO2) and silicon dioxide (SiO2), and to evaluate their photo-catalytic and antimicrobial properties. Carbon and nitrogen doped TiO2nano-particles were prepared via a sol gel synthesis, which is a simple hydrolysis and condensation technique. In situ doping was carried out using glucose and urea as carbon and nitrogen sources respectively. Doping increased the spectral response of titanium dioxide photo-catalyst, allowing it to utilise the visible region which is much wider than the UV region (about 40 % of the solar spectrum), thus making it a more efficient photo-catalyst. The carbon and nitrogen doped TiO2-SiO2nano-particles were immobilized on glass support material to allow for easy separation of the spent photo-catalyst after the photo-degradation process. Tetraethyl orthosilicate (TEOS) was employed as both a binder and precursor for silicon dioxide. A mixture of TiO2 and TEOS in a 1:1 ratio was allowed to polymerize on a glass support which had been treated with hydrofluoric acid to introduce OH groups. The prepared photo-catalytic material was characterized by FT-IR, XRD, DRS, TEM, EDX, and BET analyses. Carbon was found to be more effective as a dopant than nitrogen. It brought about a band gap reduction of 0.30 eV and a BET surface area of 95.4 m2g-1 on the photo-catalyst as compared to a gap reduction of 0.2 eV and surface area of 52.2 m2g-1 for nitrogen doped TiO2. On the other hand, introduction of SiO2 allowed utilization of visible light by the TiO2-SiO2 nano-composite leading to an improved rate of photo-degradation of both methyl orange and phenol red. However, the immobilization of TiO2 on support material made it less effective towards inactivation of E. coli ATCC 25922 bacterial cells when compared to powdered TiO2 which was able to inactivate about 98 % of the bacterial cells within an hour of treatment.
More sources

Books on the topic "Silicon catalysis":

1

M, Lewis Kenrick, and Rethwisch David G, eds. Catalyzed direct reactions of silicon. Amsterdam: Elsevier, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Feenstra, Randall M. Porous silicon carbide and gallium nitride: Epitaxy, catalysis, and biotechnology applications. Chichester, England: John Wiley & Sons, 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Cameron, M. Silica supported titanium and zirconium catalysts. Manchester: UMIST, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Titulaer, Mark Kurt. Porous structure and particle size of silica and hydrotalcite catalyst precursors: A thermoporometric study. [Utrecht: Faculteit Aardwetenschappen der Rijksuniversiteit te Utrecht, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Shiri-Garakani, Ali-Reza. Isomerisation and hydrogenolysis on silica supported catalysts. Uxbridge: Brunel University, 1986.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

G, Derouane E., ed. Microporous and mesoporous solid catalysts. Chichester, England: Wiley, 2006.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

G, Derouane E., ed. Micro- and mesoporous solid catalysts. Hoboken, NJ: Wiley, 2006.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Morales, Wilfredo. Perfluoropolyalkylether decomposition on catalytic aluminas. [Washington, D.C.]: National Aeronautics and Space Administration, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Morales, Wilfredo. Perfluoropolyalkylether decomposition on catalytic aluminas. [Washington, D.C.]: National Aeronautics and Space Administration, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Moene, Robert. Application of chemical vapour deposition in catalyst design: Development of high surface area silicon carbide as catalyst support. The Netherlands: Delft University Press, 1995.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Silicon catalysis":

1

Abu Bakar, N. H. H., and W. L. Tan. "Porous Silicon in Catalysis." In Handbook of Porous Silicon, 1–20. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-04508-5_117-1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Abu Bakar, Noor Hana Hanif, and W. L. Tan. "Porous Silicon in Catalysis." In Handbook of Porous Silicon, 1555–74. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-71381-6_117.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Chauhan, Bhanu P. S., Bharathi Balagam, Jitendra S. Rathore, and Alok Sarkar. "New Avenues, New Outcomes: Nanoparticle Catalysis for Polymer Makeovers." In Silicon Based Polymers, 3–18. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-8528-4_1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Sugiura, M., S. Kotani, and M. Nakajima. "CHAPTER 11. Catalysis by Silicon Species." In Catalysis with Earth-abundant Elements, 309–33. Cambridge: Royal Society of Chemistry, 2020. http://dx.doi.org/10.1039/9781788012775-00309.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Frank, Thomas. "Microreactors Made of Glass and Silicon." In Microreactors in Organic Chemistry and Catalysis, 53–80. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2013. http://dx.doi.org/10.1002/9783527659722.ch3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Blom, Burgert, and Matthias Driess. "Recent Advances in Silylene Chemistry: Small Molecule Activation En-Route Towards Metal-Free Catalysis." In Functional Molecular Silicon Compounds II, 85–123. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/430_2013_95.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Powley, S. L., F. Hanusch, and S. Inoue. "CHAPTER 10. Silyliumylidenes and Silylones: Low-valent Silicon Species in Small Molecule Activation." In Catalysis with Earth-abundant Elements, 284–308. Cambridge: Royal Society of Chemistry, 2020. http://dx.doi.org/10.1039/9781788012775-00284.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Nakao, Yoshiaki, and Tamejiro Hiyama. "Silicon-Based Carbon-Carbon Bond Formation by Transition Metal Catalysis." In Pharmaceutical Process Chemistry, 101–26. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2010. http://dx.doi.org/10.1002/9783527633678.ch5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Andersson, Helene, Christina Jönsson, Christina Moberg, and Göran Stemme. "Consecutive Microcontact Printing — Ligands for Asymmetric Catalysis in Silicon Channels." In Micro Total Analysis Systems 2001, 599–600. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-1015-3_262.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Mohammad, Nafeezuddin, Omar M. Basha, Sujoy Bepari, Richard Y. Abrokwah, Vishwanath Deshmane, Lijun Wang, Shyam Aravamudhan, and Debasish Kuila. "Fischer-Tropsch Synthesis in Silicon and 3D Printed Stainless Steel Microchannel Microreactors." In Catalysis for Clean Energy and Environmental Sustainability, 429–57. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-65021-6_14.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Silicon catalysis":

1

Preston, Alix, Rachel Cruz, J. Ira Thorpe, Guido Mueller, and Rodrigo Delgadillo. "Dimensional stability of Hexoloy SA silicon carbide and Zerodur glass using hydroxide-catalysis bonding for optical systems in space." In SPIE Astronomical Telescopes + Instrumentation, edited by Eli Atad-Ettedgui, Joseph Antebi, and Dietrich Lemke. SPIE, 2006. http://dx.doi.org/10.1117/12.668608.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Nishioka, Kensuke, Tsuyoshi Sueto, and Nobuo Saito. "Antireflection structure of silicon solar cells formed by wet process using catalysis of single nano-sized gold or silver particle." In 2009 34th IEEE Photovoltaic Specialists Conference (PVSC). IEEE, 2009. http://dx.doi.org/10.1109/pvsc.2009.5411705.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Spadaccini, C. M., J. Peck, and I. A. Waitz. "Catalytic Combustion Systems for Micro-Scale Gas Turbine Engines." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68382.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
As part of an ongoing effort to develop a micro-scale gas turbine engine for power generation and micropropulsion applications, this paper presents the design, modeling, and experimental assessment of a catalytic combustion system. Previous work has indicated that homogenous gas-phase microcombustors are severely limited by chemical reaction time-scales. Storable hydrocarbon fuels, such as propane, have been shown to blowout well below the desired mass flow rate per unit volume. Heterogeneous catalytic combustion has been identified as a possible improvement. Surface catalysis can increase hydrocarbon-air reaction rates, improve ignition characteristics, and broaden stability limits. Several radial inflow combustors were micromachined from silicon wafers using Deep Reactive Ion Etching (DRIE) and aligned fusion wafer bonding. The 191 mm3 combustion chambers were filled with platinum coated foam materials of various porosity and surface area. For near stoichiometric propane-air mixtures, exit gas temperatures of 1100 K were achieved at mass flow rates in excess of 0.35 g/s. This corresponds to a power density of approximately 1200 MW/m3; an 8.5-fold increase over the maximum power density achieved for gas-phase propane-air combustion in a similar geometry. Low order models including time-scale analyses and a one-dimensional steady-state plug-flow reactor model, were developed to elucidate the underlying physics and to identify important design parameters. High power density catalytic microcombustors were found to be limited by the diffusion of fuel species to the active surface, while substrate porosity and surface area-to-volume ratio were the dominant design variables.
4

Kim, Taegyu, Dae Hoon Lee, Cheonho Yoon, Dae-Eun Park, Sejin Kwon, and Euisik Yoon. "Preparation, Coating and Patterning of Cu-Based Catalyst for Methanol Steam Reforming by Micro Fuel Reformer." In ASME 2005 3rd International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2005. http://dx.doi.org/10.1115/fuelcell2005-74057.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
Recent increase in need for a portable power source drives research on micro fuel cell and micro fuel reformer as a key component of micro power generation system. Various concept of reforming system is proposed and has been studied. As an attempt to develop wafer based micro reforming system, preparation, coating, and patterning of Cu-based catalysts for methanol steam reforming for micro fuel reformer are presented. Preliminary step to develop MEMS based micro fuel reformer is carried. As a first step, Cu-based catalysts are prepared by co-precipitation method. The effect of precipitation condition on physical characteristics and catalytic activity of the catalyst such as particle size, conversion rate and quality of coating on substrate are reported. And then coating processes of prepared catalysts on glass and silicon wafer are developed. A uniform and robust catalyst layer is obtained. The amount of coated catalyst on unit area of wafer is measured to be 5∼8 mg/cm2, and the thickness of catalyst layer is about 50μm. By multiple coating processes, catalyst thickness can be controlled and up to 15mg/cm2 is obtained that has good reactivity. After then, patterning of coated catalyst layer is reported. Deposited catalyst layer is patterned by way of lift-off process of PVA (Poly-Vinyl Alcohol), organic sacrificial layer, by heating the substrate instead of etching a sacrificial layer. With the results aforementioned on catalyst preparation, coating, and patterning, a prototype micro catalytic reactor for micro fuel reformer is fabricated with MEMS technology. The fabrication process includes wet anisotropic etching of photosensitive glass wafer, coating/patterning of catalyst and bonding of layers. Next step that is challenging part of development of micro reformer is to find a way to overcome the effect of heat loss that lowers the conversion rate of reforming process and to achieve fast kinetics for reduction of the device scale. We are pursuing further optimization of structural design to improve conversion efficiency and to obtain fast kinetics.
5

Stanke, Agija, and Kristine Lazdovica. "THE PROMOTIONAL EFFECT OF POTASSIUM ON IRON-BASED SILICA SUPPORTED CATALYST FOR CO2 HYDROGENATION." In 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022/4.1/s17.21.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
Climate change is one of the biggest global challenges. As a result of human activity, large amounts of greenhouse gases are released into the atmosphere, contributing to global warming. Carbon dioxide (CO2) is a major greenhouse gas, therefore, hydrogenation of CO2 to value-added chemicals and liquid fuels is of great importance for a sustainable future. It is well known that iron-based catalysts can demonstrate good activity in the hydrogenation of CO2. However, catalysts need to be improved to promote the formation of liquid hydrocarbons. In this study, a series of silica supported iron catalysts promoted with potassium were prepared by impregnation method. The samples were characterized by X-ray fluorescence spectroscopy, X-ray diffraction, and N2 adsorption-desorption analysis. Catalytic performance of K-0, K-2, and K-5 was investigated for CO2 hydrogenation in a fixed bed reactor operated at 300 degrees Celsius and 20 bar. The reaction products were analysed by gas chromatography and FT-IR spectroscopy. The results showed that promotion with potassium reduces the selectivity of methane and reduces the amount of gas phase hydrocarbons. At the same time promotion with potassium contributed to the formation of alcohols in the liquid phase products. The highest methanol yield was obtained using the K-2 catalyst, while the K-5 catalyst promoted the formation of both methanol and ethanol in the liquid phase.
6

Kawasaki, Toru, Motohiro Aizawa, Hidehiro Iizuka, Koji Yamada, and Mitsuo Kugimoto. "Investigations and Countermeasures for Deactivation of the Hydrogen Recombination Catalyst at Hamaoka Unit 4 and 5." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29155.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
At Hamaoka Unit 4 and 5, the hydrogen concentration in the outlet of off-gas recombiner had increased, and the reactors could not continue start-up operation. Therefore, we investigated the causes of the deactivating the recombination reaction and selected appropriate countermeasures to the plants. From our investigation, two types of deactivation mechanism are found. One of the causes was decreasing the active surface area of alumina as support material by the dehydrative condensation. The other cause was poisoning of the catalyst by organic silicon compound. The organic silicon was introduced from organosilicon sealant used at the junctions of the low-pressure turbine. We also found that the boehmite rich catalyst was deactivated more easily by the organic silicon than gamma alumina because boehmite had a lot of hydroxyl groups. Finally, we estimated that the deactivation of the hydrogen recombination catalysts was caused by combined two factors, which are characteristics of boehmite catalyst support and the poisoning by the organic silicon on the catalyst surface. As the countermeasures, the boehmite was changed into more stable gamma alumina by adding the heat treatment in hydrogen atmosphere at 500°C for 1 hour, and the source of organic silicon, organosilicon sealant, was removed. At Hamaoka Unit 4 and 5 improved catalysts were applied. Moreover, linseed oil that used to be used at the plants was applied again as sealant of the low-pressure turbine casing instead of the organosilicon sealant. As a result of application of these countermeasures, the reactors could be started without increase of the hydrogen concentration at these plants.
7

Bottomley, D. J., G. Lüpke, and H. M. van Driel. "Second-harmonic probing of the Si(100) - SiO2 interface on flat and vicinal Si(100): interfacial structure and step binding sites." In Nonlinear Optics. Washington, D.C.: Optica Publishing Group, 1992. http://dx.doi.org/10.1364/nlo.1992.tha8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
Of the various surfaces of crystalline silicon, Si (100) is industrially the most important and the formation of a stable oxide on this surface has allowed it to be used as the dominant material in modern semiconductor technology. Recently there has been a great deal of interest in steps on vicinal Si (100) since they are seen to play a central role in various chemical and physical processes including epitaxial growth, catalysis and oxide formation [1,2]. The study of stepped surfaces of Si (100) to date has been carried out primarily by conventional surface science techniques such as those based on electron diffraction or scanning tunneling microscopy, which normally require ultra high vacuum (UHV). However, over the last few years it has clearly been demonstrated that surface second harmonic generation (SHG) can be sensitive to the surface-vacuum interface as well as buried interfaces and can be used ”in situ” in various types of environments [3]. Our group and others have also shown that SHG can also be senstive to the presence of steps on oxidized or bare solid surface [4].
8

Watcharasing, Sunisa, Chularat Wattanakit, Anawat Thivasasith, and Prapoj Kiattikomol. "Hierarchical Zeolites from Production Sand Waste as Catalysts for CO2 to Carbon Nanotubes CNTs: Exploration and Production Sustainability." In IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/209923-ms.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
Abstract This project targets to convert sand waste from oil & gas production, which is typically disposed as landfill, to be the higher-value products, called "Hierarchical Zeolites". This project also explores opportunities to lower amount of sand waste to landfill and try to convert CO2 to CNTs, as part of Sustainable Development Goals. Hierarchical Zeolites is developed with nanosheets morphology to overcome limitation of conventional zeolites in terms of, 1) microporous structure improvement to enhance the mass transport through active sites, 2) longer catalyst lifetime, and 3) higher surface area. With these superior characteristics, it is popularly used in wide range of applications ranging from adsorption, separation, and ion-exchange to catalysis. In this work, the Hierarchical Zeolites are utilized as catalysts for CO2 conversion to CNTs, which is the futuristic materials. Methods, The procedure to produce hierarchical zeolites with nanosheet morphology for ZSM-5, and Faujasite (FAU) topologies have been developed. Production sand waste is used as a silica source; after it is passed sand pretreatment and silica extraction steps, for hierarchical zeolites synthesis, to reduce their production cost. Physicochemical properties of the synthesized hierarchical zeolites are analyzed, such as surface area, porosity, topology, and textural properties. These physicochemical properties will be compared with the one obtained using the commercial silica sources. Then, the developed Hierarchical zeolites are applied as catalyst for CNTs production from CO2. The fixed bed Chemical Vapor Deposition (CVD) technique is introduced for CNTs synthesis, as its low energy cost consumption, high quality of CNTs synthesis. The physical properties of CNTs, including tube diameter, graphitic structure (ID/IG). To prove of concept for extracting silica source as a substance for hierarchical zeolite synthesis and use as catalyst for CNTs production from CO2. Two types of hierarchical zeolites nanosheet (ZSM-5, and FAU) have been successfully synthesized from nano silica obtained froms and waste, with high yield more than 75%. The hierarchical-FAU, and hierarchical -FAU-5's performance on CNTs production from CO2 are compared together. It was found that the hierarchical-FAU provide the best catalyst for CNT production with the CNTs yield of 28.9%, the average diameter of 22.8 nm and ID/IGof 0.68. The optimal condition for hierarchical zeolites synthesis will be further applied in the prototype phase, in the 50X up-scaling. This technology is expected to lower an amount of production sand waste disposal to landfill. Moreover, the synthesized hierarchical zeolites will be further explored in other advanced reactions apart from CNTs synthesis, such as catalytic cracking. Hierarchical zeolites from production sand waste are firstly initiated and successfully achieved in PTTEP. From these findings, information will be applied to the process design of Hierarchical zeolites synthesis in prototype, and scale-up phase.
9

Yee, David K., Kare Lundberg, and Chris K. Weakley. "Field Demonstration of a 1.5 MW Industrial Gas Turbine With a Low Emissions Catalytic Combustion System." In ASME Turbo Expo 2000: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/2000-gt-0088.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
An electric utility grid connected test facility has been established at Silicon Valley Power (SVP) in Santa Clara, California to validate the reliability, availability, maintainability and durability (RAMD) of a commercial-ready catalytic combustor system (XONON). Installed in the Silicon Valley Test Facility (SVTF) is a 1.5MW Kawasaki M1A-13A gas turbine fitted with a catalytic combustor. The gas turbine package is controlled by a Woodward MicroNet control system. The combustor utilizes a two stage lean premix preburner system to obtain the required catalyst inlet temperatures and low NOx over the operating load range. The fuel-air mixer incorporates counter rotating swirlers to mix the catalyst fuel and air to achieve the desired uniformity. The patented catalyst design is composed of specially coated metal foils. Overall engine performance was measured and the emissions were continuously monitored. As of December 1999, emissions of NOx < 2.5 ppmv and CO and UHC < 6 ppmv have been maintained at 100% load for over 3700 hours of operation on the utility grid. The turbine continues to operate 24 hours a day, 7 days per week with commercial levels of unit availability.
10

Dagdanova, Ts B. "Renovated industrial areas as a catalyst for improving of the urban environment quality (according to IRNITU students’ projects)." In SiliconPV 2021, The 11th International Conference on Crystalline Silicon Photovoltaics. AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0091995.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Silicon catalysis":

1

Berry, D. H. Catalytic synthesis of silicon carbide preceramic polymers: Polycarbosilanes. Office of Scientific and Technical Information (OSTI), October 1992. http://dx.doi.org/10.2172/6715947.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Berry, D. H. Catalytic synthesis of silicon carbide preceramic polymers: Polycarbosilanes. Office of Scientific and Technical Information (OSTI), November 1991. http://dx.doi.org/10.2172/5730510.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Owens, L., T. M. Tillotson, and L. M. Hair. Characterization of vanadium/silica and copper/silica aerogel catalysts. Office of Scientific and Technical Information (OSTI), September 1995. http://dx.doi.org/10.2172/212472.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Huh, Seong. Morphological Control of Multifunctional Mesoporous Silica Nanomaterials for Catalysis Applications. Office of Scientific and Technical Information (OSTI), December 2004. http://dx.doi.org/10.2172/837271.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Stanger, Keith James. Studies of Immobilized Homogeneous Metal Catalysts on Silica Supports. Office of Scientific and Technical Information (OSTI), January 2003. http://dx.doi.org/10.2172/815768.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Kalel, Rahul. Silica Immobilized Brønsted-Lewis Acidic Ionic Liquid : Heterogeneous catalyst for Condensation-Aromatization in the Synthesis of 2-(4-nitrophenyl)-1H-benzimidazole by cooperative catalysis. Peeref, March 2023. http://dx.doi.org/10.54985/peeref.2303p6889123.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Zaman, Sharif F., Hisham S. Bamufleh, Abdulrahim Al-Zahrani, Mohammed Raoof Ahmed Rafiqui, Yahia A. Alhamed, and Lachezar Petrov. Acetic Acid Hydrogenation over Silica Supported MoP Catalyst. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, January 2018. http://dx.doi.org/10.7546/crabs.2018.01.04.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Zaman, Sharif F., Hisham S. Bamufleh, Abdulrahim Al-Zahrani, Mohammed Raoof Ahmed Rafiqui, Yahia A. Alhamed, and Lachezar Petrov. Acetic Acid Hydrogenation over Silica Supported MoP Catalyst. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, January 2018. http://dx.doi.org/10.7546/grabs2018.1.04.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Gonzalez, R. D. The preparation and catalytic applications of silica, alumina, and zirconia supported thermally resistant mono and bimetallic catalysts. Final report, December 1, 1992 - November 30, 1995. Office of Scientific and Technical Information (OSTI), April 1997. http://dx.doi.org/10.2172/469091.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Radu, Daniela Rodica. Mesoporous Silica Nanomaterials for Applications in Catalysis, Sensing, Drug Delivery and Gene Transfection. Office of Scientific and Technical Information (OSTI), January 2004. http://dx.doi.org/10.2172/837277.

Full text
APA, Harvard, Vancouver, ISO, and other styles

To the bibliography