Дисертації з теми "Palladium-based"
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Amandusson, Helena. "Hydrogen extraction with palladium based membranes /." Linköping : Univ, 2000. http://www.bibl.liu.se/liupubl/disp/disp2000/tek651s.htm.
Повний текст джерелаElhage, Ayda. "Palladium-based Catalyst for Heterogeneous Photocatalysis." Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/39388.
Повний текст джерелаKumar, Dheeraj. "Synthesis of vinyl acetate on palladium-based catalysts." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1747.
Повний текст джерелаLi, Guangqin. "Studies on Hydrogen-Storage Properties of Palladium Based Nanomaterials." 京都大学 (Kyoto University), 2014. http://hdl.handle.net/2433/193566.
Повний текст джерелаBrazeau, Nicolas. "Palladium-Based Catalysts for Ethanol Electrooxidation in Alkaline Media." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32201.
Повний текст джерелаShao, Zhecheng. "Novel conducting aniline-based materials using advanced palladium catalysts." Thesis, University of Bristol, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.540875.
Повний текст джерелаGalkin, Maxim. "Palladium-catalyzed lignin valorization : Towards a lignin-based biorefinery." Doctoral thesis, Uppsala universitet, Syntetisk organisk kemi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-265315.
Повний текст джерелаWang, Lixin. "Ferrocene-based molecular electronics and nanomanufacturing of palladium nanowires." College Park, Md. : University of Maryland, 2007. http://hdl.handle.net/1903/7757.
Повний текст джерелаThesis research directed by: Dept. of Chemistry and Biochemistry. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Awano, Tomotsugu. "Boron-Based Organic Synthesis via New Palladium-Catalyzed Coupling Reactions." 京都大学 (Kyoto University), 2011. http://hdl.handle.net/2433/142247.
Повний текст джерелаSun, Desheng. "On the corrosion behavior and biocompatibility of palladium-based dental alloys." Columbus, Ohio : Ohio State University, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1085789516.
Повний текст джерелаTitle from first page of PDF file. Document formatted into pages; contains xix, 155 p.; also includes graphics (some col.). Includes abstract and vita. Advisor: William A. Brantley, College of Dentistry. Includes bibliographical references (p. 148-155).
Ling, Chen. "First-principles study of palladium-based metal alloys as hydrogen purification membranes." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31798.
Повний текст джерелаCommittee Chair: Sholl, David; Committee Member: Agrawal, Pradeep; Committee Member: Alamgir, Faisal; Committee Member: Fuller, Tom; Committee Member: Jones, Christopher. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Cao, Yang 1959. "Influence of structure of palladium and nickel based membranes on hydrogen permeation." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=82838.
Повний текст джерелаThe delay for hydrogen permeation in palladium is increased when the degree of deformation increases. The annealing of deformed palladium and Pd 77Ag23 at 250ºC or 850ºC accelerates hydrogen diffusion. The annealed metals release hydrogen more rapidly than the deformed metals. The Pd77Ag23 alloy needs more time to release hydrogen. The solubility increases in both palladium and Pd77Ag23 when deformation increases. A hydrogen-trapping model has been developed, which allows the prediction of trends in the experimental data.
The nickel electrodeposits exhibit fiber texture with two components (100) and (110). Low current densities yield a dominant (100) texture. High current densities develop a strong (110) fiber texture. There is a texture transition region between 30 and 50A/dM2. After annealing at 800ºC for lh, the (100) texture is transformed to (111) texture. Diffusion coefficients increase as texture is transformed from (001) to (011) and (111). The diffusion coefficient of a sample without a dominant texture is lower than the values measured for the samples with (001), (110) and (111) textures. Diffusion coefficients of (001) and (011) polycrystalline membranes are higher than (001) and (011) single crystal membranes. However, in both cases the (011) diffusion coefficient is greater than the (001). By using absorption energies of (001), (011) and (111), the three basic planes in nickel, adsorption energies for other orientations have been estimated using the weighted average method. Absorption energies for different orientations have been shown in the form of an inverse pole figure.
The diffusivity of hydrogen increases six times from single crystal membranes to polycrystalline membranes, and increases six times again from polycrystalline membranes to nanocrystalline membranes. When nanocrystalline nickel membranes have been annealed between 200ºC and 900ºC, they yield a texture change in the nickel membrane from (100) fiber texture to a mixture of (100) fiber texture and (111) texture, and then only one recrystallization (111) texture component is observed. During annealing from 200ºC to 900ºC, a slight increase in the number of high angle (45º--65º) grain boundaries occurs and a percentage of the low (0º--15º) and middle angle (30º--45º) grain boundaries decreases slightly. After annealing at 800ºC and 900ºC, changes in the grain size do not affect the rate of diffusion of hydrogen.
There are four major microstructural factors: deformation defects, grain size, texture and grain misorientation, which affect hydrogen permeation in metals. In the polycrystalline materials studied, the importance of crystal defects, grain size, texture and grain misorientation on hydrogen permeation has been established.
In the developed multilayer membranes when hydrogen charging is from the nano-Ni side of the nano-Ni and poly-Ni composite membrane, the permeation current rises rapidly. When hydrogen charging is from the poly-Ni side of the same composite membrane, the permeation current gradually rises and it takes longer to reach a steady state. The permeability of the nano-poly-Ni membranes charging from the nano-Ni side is eight times higher than that of the same composite membrane charging from the poly-Ni side. The diffusivity of the nano-poly-Ni membranes charging from the nano-Ni side is two times higher than that of the same composite membrane charging from the poly-Ni side. The nano-poly-Ni membranes charging from the nano-Ni side release hydrogen faster than the same composite membrane charging from the opposite side. The diffusivity and permeability of the nano-poly-Ni membrane are smaller than those for a single nano-Ni membrane, but larger than those for a single poly-Ni membrane. The hydrogen permeation model for a bilayer membrane is built to simulate diffusion in the nano-Ni layer and the poly-Ni layer. The model can generate concentration profiles of hydrogen. The experimental data are in good qualitative agreement with the model.
Saiman, Mohd Izham Bin. "Heterogeneous gold and palladium based catalysts for solvent-free oxidation of toluene." Thesis, Cardiff University, 2012. http://orca.cf.ac.uk/35776/.
Повний текст джерелаCabaj, Maciej. "Preparation, characterisation and catalytic activity of palladium, silver and silver-based nanoparticles." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648133.
Повний текст джерелаFernandez, Alvarez Georgina. "Palladium based catalysts for oxygen reduction in polymer electrolyte membrane fuel cells." Thesis, University of Newcastle upon Tyne, 2011. http://hdl.handle.net/10443/2213.
Повний текст джерелаAb, Rahim Mohd Hasbi. "Heterogeneous gold, palladium and copper based catalysts for liquid phase oxidation of methane." Thesis, Cardiff University, 2011. http://orca.cf.ac.uk/55125/.
Повний текст джерелаBetham, Michael. "A comparative study of homogeneous and heterogeneous phosphine and carbene based palladium catalysts." Thesis, University of Newcastle Upon Tyne, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.407617.
Повний текст джерелаJones, Simon Philip. "Influence of modifiers on Palladium based nanoparticles for room temperature formic acid decomposition." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:873277f2-c4f7-45b7-a16d-bba064e24bee.
Повний текст джерелаNitze, Florian. "Synthesis and characterization of palladium based carbon nanostructure-composites and their clean-energy application." Doctoral thesis, Umeå universitet, Institutionen för fysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-68852.
Повний текст джерелаNanostrukturerat kol är ett mycket brett fält med ett stort antal tillämpningar. Användning av kolnanostrukturer som support för heterogena katalysmaterial har tillsammans med utvecklingen av nanopartiklar lett till en avsevärd minskning av kostnaden för katalysatorer. Katalysatorer designade på detta sätt används frekvent i bränsleceller. För portabla tillämpningar är utvecklingen av säkra och miljövänliga lågtemperaturceller mycket viktig. En teknologi som uppfyller dessa kriterier är bränsleceller som drivs med myrsyra (DFAFC). Sådana bränsleceller har många önskvärda egenskaper, såsom en hög elektromotorisk kraft och en enkel hantering av bränslet. Trots dessa goda egenskaper har de också en del nackdelar som hindrar en full kommersialisering. De två mest problematiska är en för låg genererad effekt samt en för kort livslängd på katalysatorerna. Denna avhandling fokuserar på två huvudpunkter som adresserar dessa problem; tillverkning och karaktärisering av kolnanostrukturer producerade med CVD, och deras tillämpningar som support för katalysatorer. Materialen karaktäriseras med en rad olika tekniker, allt från transmission-elektronmikroskopi till bränslecellstester. Olika kolnanostrukturer har syntetiserats med katalytisk CVD på palladium (Pd) nanopartiklar. Produktionen av flerväggiga kolnanorör, kolfibrer och heliska kolnanofibrer har tillverkats med acetylen som kolkälla och genom att variera temperaturen kunde innehållet av olika typer av nanostrukturerat kol kontrolleras. Särskilt stort intresse har de heliska kolnanofibrerna rönt på grund av deras unika struktur. Vi beskriver en tillväxtmekanism baserad på en anisotrop diffusionsmodell. Genom att justera produktionsparametrarna visar vi att heliska kolnanofibrer kunde tillverkas med nära 100 %-ig renhet och hög effektivitet. Den unika heliska och fiberlika strukturen är mycket intressant for tillämpningar som support för heterogena katalysatorer. Ett flertal kompositer för katalytiska tillämpningar har utvecklats baserade på heliska kolnanofibrer, dekorerade med heterogena katalysatorer genom en rad olika kemiska/fysikaliska tekniker. De syntetiserade materialen visar mycket goda katalytiska egenskaper för att oxidera metanol, etanol och myrsyra. Därigenom blir de mycket attraktiva för användning i bränsleceller. Vi korrelerar de goda katalytiska egenskaperna med en bra vidhäftning av nanopartiklarna på de heliska kolnanofibrerna defekter, deras goda ledningsförmåga, bra egenskaper för att förbereda elektroder, samt deras stora yta i förhållande till deras volym och vikt.
喜教, 鈴間. "Asymmetric addition reaction of organoboronic acid catalyzed by palladium with ferrocene-based phosphine ligand." Thesis, https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB10352112/?lang=0, 2010. https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB10352112/?lang=0.
Повний текст джерелаSchmid, Thibault E. "Synergism between N-heterocyclic carbene and phosphorus-based ligands in ruthenium and palladium catalytic systems." Thesis, University of St Andrews, 2012. http://hdl.handle.net/10023/3452.
Повний текст джерелаBaldoni, Chiara. "Study and development of hydrogen gas sensors based on a conductive polymer functionalized with palladium." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amslaurea.unibo.it/25682/.
Повний текст джерелаKhumalo, Zakhelumuzi Mesuli. "Growth and characterisation of platinum and palladium catalysed silicon based nanostructures for nano-device fabrication." Doctoral thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29422.
Повний текст джерелаKlaas, Lutho Attwell. "Synthesis and characterization of binary Palladium based electrocatalysts towards alcohol oxidation for fuel cell application." University of the Western Cape, 2018. http://hdl.handle.net/11394/6448.
Повний текст джерелаThe anode catalyst is one of the important parts of the direct alcohol fuel cell (DAFC); it is responsible for the alcohol oxidation reaction (AOR) takes place at the anode side. Pd has been reported to have good alcohol oxidation reactions and good stability in alkaline solution. Better stability and activity has been reported for Pd alloyed catalysts when compared to Pd. Choosing a suitable alcohol also has an effect on the activity and stability of the catalyst. This study investigates the best catalyst with better AOR and the best stability and also looks at the better alcohol to use between glycerol and ethanol for the five in-house catalysts (20% Pd, PdNi, PdNiO, PdMn3O4 and PdMn3O4NiO on multi walled carbon nanotubes) using cyclic voltammetry (CV), linear sweep voltammetry (LSV), electrochemical impedance spectrometry (EIS) and chronoamperometry. HR-TEM and XRD techniques were used to determine the particle size and average particle size, respectively while EDS used to determine elemental composition and ICP was used to determine catalyst loading. It was observed from LSV that PdNiO was the most active catalyst for both ethanol and glycerol oxidation, and it was the most stable in ethanol while PdMn3O4 proved to be the most stable catalyst in glycerol observed using chronoamperometry. The best alcohol in this study was reported to be glycerol having given the highest current densities for all the inhouse catalysts compared to ethanol observed using LSV. From XRD and HR-TEM studies, particle sizes were in the range of 0.97 and 2.69 nm for XRD 3.44 and 7.20 nm for HR-TEM with a little agglomeration for PdMn3O4 and PdMn3O4NiO.
Sanchez, Trujillo Felipe Juan. "Investigation of the catalytic performance of palladium-based catalysts for hydrogen production from formic acid decomposition." Thesis, Cardiff University, 2018. http://orca.cf.ac.uk/117629/.
Повний текст джерелаPritchard, James. "Preparation and characterisation of gold and palladium based catalysts for the direct synthesis of hydrogen peroxide." Thesis, Cardiff University, 2012. http://orca.cf.ac.uk/47059/.
Повний текст джерелаLiu, Meimei. "Development of Sol-Gel Prepared Palladium-Based Sulfated Zirconia Catalysts for Nitrogen Oxides Reduction with Methane." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1253296767.
Повний текст джерелаShahreen, Laila. "Palladium Doped Titanium Dioxide Nanofiber Based Catalytic Support To Reduce Nitric Oxide Over Carbon Monoxide Gas." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1375362737.
Повний текст джерелаFayemi, Omolola E., Adeniyi S. Ogunlaja, Edith Antunes, Tebello Nyokong, and Zenixole R. Tshentu. "The Development of Palladium(II)-Specific Amine-Functionalized Silica-Based Microparticles: Adsorption and Column Separation Studies." Taylor & Francis Group, 2015. http://hdl.handle.net/10962/d1020278.
Повний текст джерелаOriginal publication is available at http://dx.doi.org/10.1080/01496395.2014.978017
Holmgreen, Erik Michael. "Nitrogen dioxide reduction with methane over palladium-based sulfated zirconia catalysts a componant [i.e. component] of a lean exhaust aftertreatement system /." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1155739813.
Повний текст джерелаKautto, Per. "Influences of palladium ceramics on valuable metal losses to a PbO-SiO2-Sb2O3 based silver smelting slag." Thesis, Luleå tekniska universitet, Industriell miljö- och processteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-81308.
Повний текст джерелаSilver och palladium kan finnas i materialet som kallas katalysatormassa som kommer från framställningen av katalysatorer. Dessa värdefulla metaller måste återvinnas från detta avfall för att öka hållbarheten i vårt samhälle både miljömässigt och ekonomiskt. Materialet har också varit en möjlig orsak till problem vid silversmältningen på Bolidens smältverk, Rönnskär. Tyvärr på grund av den enorma ekonomin kring ädelmetaller och deras produktion har det inte publicerats många artiklar om detta ämne. Därför försöker detta arbete att öka förståelsen av hur detta avfall påverkar A-slaggen hos ädelmetallframställningen på Rönnskär. Detta arbete undersöker på hur olika flussmedel och temperaturer påverkar slaggen och metallfasen, samt hur en ökad mängd katalysatormassa påverkar smältan. Det görs genom att göra flera testsmältor med en bas med slagg från processen, silvergranuler samt tillsatser av koks eller natriumkarbonat vid olika temperaturer. Resultaten visar att användandet av en reducerande miljö genom tillsättningen av koks ökar återvinningen av ädelmetallerna. En ökad temperatur på smältan har också visat på en ökad återvinning. Utöver detta så har grunden till ett alternativt sätt att använda sig av materialet tagits fram. Detta alternativ består av att smälta materialet tillsammans med silver och flussmedel och har tagits fram för att undvika möjliga problem i befintlig process.
Srinivasan, Guruprasad. "Evaluation of secondary wire bond integrity on silver plated and nickel/palladium based lead frame plating finishes." Diss., Online access via UMI:, 2008.
Знайти повний текст джерелаIncludes bibliographical references.
Ma, Liang-Chih. "Palladium/Alloy-based Catalytic Membrane Reactor Technology Options for Hydrogen Production: A Techno-Economic Performance Assessment Study." Digital WPI, 2016. https://digitalcommons.wpi.edu/etd-dissertations/535.
Повний текст джерелаMartínez, Agramunt Víctor. "Nickel and palladium supramolecular organometallic complexes based on NHC-ligands with polyaromatic moieties for host-guest chemistry studies." Doctoral thesis, Universitat Jaume I, 2020. http://dx.doi.org/10.6035/14104.2020.366143.
Повний текст джерелаThree nickel-based and one palladium-based supramolecular organometallic cages have been prepared. These four cages are based on a N-heterocyclic carbene ligand with a pyrene tag, that has been key in the subsequent applications of the cage together with the inner cavity. By pi-stacking interactions, it has been possible to encapsulate both polycylic aromatic hydrocarbons and fullerenes. The interest on first group of compounds is based on their accurate toxicity while the fullerenes are interesting due to their added value. It was possible to extract the first group of molecules from an organic media through the encapsulation inside the supramolecular cages. The host-guest adduct formed with fullerenes encapsulated inside the palladium cage was used as photocatalyst of aromatic, cyclic and acyclic substrates via singlet oxygen generation. The same palladium cage was used as receptor for multiple stacks of polyaromatic compounds.
Programa de Doctorat en Ciències
Kula, Lungelwa Ethel. "Development of a palladium based membrane reactor system for production of ultra-pure hydrogen from liquefied petroleum gas." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2598.
Повний текст джерелаHydrogen is widely regarded as the clean energy carrier for future use in both transportation and electricity sectors. It has become an important new focus as an alternative fuel for cleaner energy technologies especially in the Polymer Exchange Membranes (PEM) fuel cells. However, specific technical and marketing demands must be met by a fuel processor for ultra-pure hydrogen production and at a very competitive cost. Liquid Petroleum gas (LPG) is seen as a potential source for low cost hydrogen production due to its relatively high energy density, easy storage and well-established infrastructure for fuel. There is a growing interest in the use of membrane in reaction engineering with the selective separation of the products from the reaction mixture provided opportunities to achieve higher conversion. Membrane separation technologies have potential to reduce operating costs, minimise unit operations and lower energy consumption. The overall goal of this project is to investigate the engineering feasibility associated performance of employing a palladium or palladium alloy membrane reactor for the production of ultra-pure hydrogen from the products of a liquefied petroleum gas (LPG) pre-reformer in determining the optimal process conditions for the production of high purity hydrogen from the LPG feedstock and evaluating of the performance of a Pd-based membrane in relation to maximizing the yield of hydrogen from the feedstock as well as minimizing the CO content of the reformate.
Dhawan, Rajiv. "The palladium catalyzed multicomponent synthesis of Münchnones : novel one-pot metal catalyzed routes to heterocycles and peptide-based molecules." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=85065.
Повний текст джерелаChapter 2 of this thesis describes a new palladium catalyzed multicomponent synthesis of beta-lactams. This reaction was developed based upon previous work in this laboratory, which showed that imidazoline-carboxylates could be generated from coupling two imines, an acid chloride and CO. Mechanistic studies suggested that this product arose from a 1,3-dipolar cycloaddition of an imine-HCl molecule with Munchnone. Removal of this acid combined with adjusting reactant ratios, and the utilization of ligands generated 3-amido substituted beta-lactams in moderate to good yields.
Chapter 3 discusses studies that further explain the origin of the beta-lactam and imidazoline-carboxylate products obtained from catalysis. These studies demonstrate that imidazoline-carboxylates are generated either directly through a 1,3-dipolar cycloaddition reaction of imine-HCl with Munchnone, or indirectly from acid catalyzed rearrangement of an initially formed beta-lactam. In addition, the potential intermediates in the catalytic cycle, including the palladium bound carbonyl complex are completely characterized.
Chapter 4 describes the first example of a metal-catalyzed synthesis of Munchnones. Reaction optimization focused on modifying the catalyst structure to {Pd(Cl)[eta2-CH(R1)NR 2COR3]}2 (formed by pre-treating Pd 2(dba)3 CHCl3 with imine (R1C(H) = NR2) and acid chloride (R3COCl)), increasing CO pressures and employing bromide salts to stabilize the palladium catalyst. These modifications to the reaction enabled the development of a catalytic Munchnone synthesis from imines, acid chlorides, and CO.
Chapter 5 describes the development of a highly modular one-step palladium catalyzed synthesis of pyrroles. This reaction shows that pyrroles can be thought of as being a coupling product of an imine, acid chloride and an alkyne, formed via the in situ trapping of Munchnones with alkynes. In addition, further improvements to the Munchnone synthesis through the utilization of sterically bulky phosphine ligands (i.e. [P(o-Tol) 3]) will be discussed. As well as broadening the scope of accessible Munchnones, this ligand also increased the rate of product formation.
Chapter 6 describes some preliminary studies on the mechanism of Munchnone synthesis. Based upon kinetic data and catalyst resting state analyses, the rate determining step was suggested to possibly be N-acyliminium salt oxidative addition to Pd(0). In addition, crystal structures of {[P( o-Tol)3]Pd(eta2-CH(Tol)N(PMB)COPh)} and its dimeric precursor {Pd(eta2-CH(Tol)N(PMB)COPh)}2 were obtained.
Chen, Xi. "Application of in-situ IR spectroscopy for the evaluation of new palladium based catalysts for the hydrogenation of anthraquinone." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/43156.
Повний текст джерелаHolmgreen, Erik M. "Nitrogen dioxide reduction with methane over palladium-based sulfated zirconia catalysts: a componant of a lean exhaust aftertreatement system." The Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=osu1155739813.
Повний текст джерелаAlrawashdeh, Albara I. S. "From Mono- to Tetraphosphines – A Contribution to the Development of Improved Palladium Based Catalysts for Suzuki- Miyaura Cross Coupling Reaction." Doctoral thesis, Universitätsbibliothek Chemnitz, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-80110.
Повний текст джерелаIn the first part of this thesis, the synthesis and catalytic activity of neopentyl and neosilyl substituted phosphine palladium complexes is described. The complexes have been tested in the Suzuki-Miyaura cross-coupling reaction. Whereas the neosilyl substituted phosphines form 2:1 adducts (5b and 5d) with Palladium salts which showed moderate activity, the neopentyl complexes quickly undergo cyclometallation in presence of bases to form Palladacycles (6a, 6e, and 6g) which showed only moderate catalytic activity. Cyclometallation could be avoided by the preparation starting from Pd(cod)Cl2 in the absence of bases. The obtained 2:1 phosphine adducts showed superior activity. We concluded that cyclometallation process is an important deactivation pathway, this prompted us to test trialkyl phosphine ligands with medium size but substituents not reliable to cyclometallation. We have been pleased to find that 4h (R = Cy, R‘ = neopentyl) and 4m (R = iPr, R‘ = CH2Cy) showed good activity in the Suzuki-Miyaura cross-coupling reaction. The best results have been obtained by in situ preparation of active catalyst from Pd2(dba)3 or Pd(OAc)2 and the appropriate phosphonium salt. In the second part of this thesis, the first synthesis of a new family of biphenyl based bisphosphine ligands (70, 71, 76, and 77) has been reported. Their palladium complexes were successfully tested as catalyst in the Suzuki cross-coupling reaction. Within the class of bisphosphine based palladium complexes they show good activity in Suzuki-Miyaura cross-coupling reaction. Systematically, was expanded our synthesis strategy and we were able to introduce the first synthesis of a highly symmetric 2,2',6,6'-tetraphosphinobiphenyl. Tetraphosphine 82 was used as ligand in a dinuclear palladium(II) complex 83. Upon complexation the D2h symmetric 2,2’,6,6’-tetraphosphine lead to a chiral D2 symmetric complex 83
Watson, Junko Mitome. "Spectroscopic characterization of Palladium based catalysts supported on Titania prepared by sol-gel for reduction of Nitrogen Oxides using Methane /." The Ohio State University, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486474078050559.
Повний текст джерелаAnselment, Timo [Verfasser]. "Development of Novel Phosphine Sulphonate-Based Palladium Catalysts for Ethene Homo- and Co-Polymerisation Reactions with Polar Functionalised Olefins / Timo Anselment." München : Verlag Dr. Hut, 2011. http://d-nb.info/1018981675/34.
Повний текст джерелаFashedemi, Omobosede Oluwatoyin. "Microwave-assisted synthesis of palladium-based core-shell nanocatalysts and iron phthalocyanines and their applications in direct alkaline alcohol fuel cells." Thesis, University of Pretoria, 2013. http://hdl.handle.net/2263/79234.
Повний текст джерелаThesis (PhD)--University of Pretoria, 2013.
Chemistry
PhD
Unrestricted
Mketo, Nomvano. "Palladium and copper complexes based on dendrimeric and monofunctional N, N’ chelating ligands as potential catalysts in the oxidative carbonylation of alcohols." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4288.
Повний текст джерелаENGLISH ABSTRACT: In this thesis we describe the synthesis of several new N-(n-propyl)-1-(2-pyridyl and quinolyl)-imine ligands (ML1-ML4) as well as peripheral functionalised iminopyridyl and iminoquinolyl poly(propylene-imine) dendrimeric ligands (DL1-DL8) with a 1,4- diaminobutane core. The dendrimeric ligands were obtained by modification of the peripheral groups of Generation 1 and Generation 2 poly(propylene-imine) dendrimers, (DAB-(NH2)n which are commercially available, with a series of aldehydes. All the ligands were fully characterised by ESI-mass spectrometry, elemental analysis, 1H&13C{1H}-NMR, FT-IR and UV/Vis spectroscopies. These ligands were utilised to synthesise Pd(II) and Cu(I) complexes using appropriate metal precursors. Some of mononuclear complexes, [N-(n-propyl)-(2-pyridyl and quinolyl) methanimine] dichloro Pd(II) complexes (C1-C4) and bis[N-(n-propyl)-(2-pyridyl and quinolyl) methanimine] copper(I) tetrafluoroborate complexes (C14) were structurally characterised. Pd(II) complexes adopted a distorted square-planar geometry around the metal centre while Cu(I) complex exhibit a distorted tetrahedral arrangement around the metal centre. Both Pd(II) and Cu(I) multinuclear complexes (metallodendrimers) were characterised using a range of analytical techniques.
AFRIKAANSE OPSOMMING: In hierdie tesis word die sintese van verskeie nuwe N-(n-propiel)-1-(2-piridiel) en kinolielimien ligande (ML1-ML4) sowel as gefunksioneerde imienopiridiel en imienokinoliel poli(propilien-imien) dendrimeriese ligande (DL1-DL8) beskryf. Die dendrimeriese ligande was behaal deur die modifikasie van perifere groepe van Generasie 1 en Generasie 2 poli(propilien-imien) dendrimere met ‘n reeks aldehiede. Alle ligande was volledig deur ESI-massaspektrometrie, elementele analiese, 1H en 13C{1H} – KMR, FT-IR en UV/Sigbare spektroskopie gekarakteriseerd. Hierdie ligande was gebruik om Pd(II) en Cu(I) komplekse te berei om van die gepaste metaal voorlopers te gebruik te maak. Sommige van die mono-kern komplekse, [N-(npropiel)-( 2-piridiel) en kinoliel metanimien] dikloor Pd(II), komplekse (C1-C4) en bis[N-(npropiel)-( 2-piridiel) metanimien] koper(I) tetrafloorboraat, kompleks (C14) was struktureël gekarakteriseerd. Pd(II) komplekse neem ‘n versteurde vierkant valk geometrie om die metaal senter aan, terwyl die Cu(I) kompleks, ‘n versteurde tetrahedriese opset rondom die metaal toon. Beide Pd(II) en Cu(I) multikern komplekse (metaaldendrimere) was deur ‘n verskeidenheid van analitiese tegnieke gekarakteriseerd.
Brüllingen, Eric [Verfasser], Bernd [Gutachter] Goldfuß, and Axel [Gutachter] Griesbeck. "P-biphenyl-2,2’-bisfenchol phosphite (P-BIFOP-X) based palladium-, copper- and iron-catalysts in enantioselective C–C couplings / Eric Brüllingen ; Gutachter: Bernd Goldfuß, Axel Griesbeck." Köln : Universitäts- und Stadtbibliothek Köln, 2020. http://d-nb.info/1225478499/34.
Повний текст джерелаAnselment, Timo Martin Jürgen [Verfasser], Bernhard [Akademischer Betreuer] Rieger, and Wolfgang [Akademischer Betreuer] Eisenreich. "Development of Novel Phosphine Sulphonate-Based Palladium Catalysts for Ethene Homo- and Co-Polymerisation Reactions with Polar-Functionalised Olefins / Timo Martin Jürgen Anselment. Gutachter: Wolfgang Eisenreich. Betreuer: Bernhard Rieger." München : Universitätsbibliothek der TU München, 2011. http://d-nb.info/1019588837/34.
Повний текст джерелаAnselment, Timo [Verfasser], Bernhard [Akademischer Betreuer] Rieger, and Wolfgang [Akademischer Betreuer] Eisenreich. "Development of Novel Phosphine Sulphonate-Based Palladium Catalysts for Ethene Homo- and Co-Polymerisation Reactions with Polar-Functionalised Olefins / Timo Martin Jürgen Anselment. Gutachter: Wolfgang Eisenreich. Betreuer: Bernhard Rieger." München : Universitätsbibliothek der TU München, 2011. http://nbn-resolving.de/urn:nbn:de:bvb:91-diss-20110811-1079636-1-4.
Повний текст джерелаBridget, Tshamano Matamela. "Synthesis & characterization of yttria stabilised zirconia (YSZ) hollow fibre support for Pd based membrane." Thesis, University of the Western Cape, 2013. http://hdl.handle.net/11394/3832.
Повний текст джерела>Magister Scientiae - MSc
Alrawashdeh, Albara I. S. [Verfasser], Heinrich [Akademischer Betreuer] Lang, Heinrich [Gutachter] Lang, and Wolfgang [Gutachter] Weigand. "From Mono- to Tetraphosphines – A Contribution to the Development of Improved Palladium Based Catalysts for Suzuki- Miyaura Cross Coupling Reaction / Albara I. S. Alrawashdeh ; Gutachter: Heinrich Lang, Wolfgang Weigand ; Betreuer: Heinrich Lang." Chemnitz : Universitätsbibliothek Chemnitz, 2011. http://d-nb.info/1214008410/34.
Повний текст джерелаLiu, Dan, Xuan Xie, and Rudolf Holze. "Corrosion Stability of Metallic Materials in Dentistry as Studied with Electrochemical Impedance Measurements." Electrochemical Science Group, 2019. https://monarch.qucosa.de/id/qucosa%3A34300.
Повний текст джерелаBush, Alexander Graham. "Part A: Design of new camphor-based hydrazide organocatalysts and their applications to enantioselective Friedel-Crafts alkylations Part B: The development of the palladium catalyzed addition of organoborates to alkynyl esters: Synthesis of trisubstituted olefins as single isomers." Thesis, University of Ottawa (Canada), 2009. http://hdl.handle.net/10393/28272.
Повний текст джерела