Bibliografie tematiche / Catalytic reforming

Letteratura scientifica selezionata sul tema "Catalytic reforming"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 5 marzo 2023

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Articoli di riviste sul tema "Catalytic reforming"

1

KALDYGOZOV, Ye К., V. M. KAPUSTIN, G. M. IZTLEUOV, B. A. ABDIKERIMOV e Ye S. TLEUBAEVA. "CATALYTIC REFORMING OF GASOLINE FRACTION OIL MIXTURES OF THE SOUTHERN REGION OF THE REPUBLIC OF KAZAKHSTAN". Neft i gaz 2, n. 116 (15 aprile 2020): 100–108. http://dx.doi.org/10.37878/2708-0080/2020.006.

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This article discusses the results of a study of the process of catalytic reforming of straight-run gasoline obtained from a mixture of oil from a field located in the southern region of Kazakhstan. The individual and group hydrocarbon composition of the initial hydrotreated gasoline and reformate was studied in order to establish the degree of conversion of hydrocarbons at different stages of catalytic reforming. The qualitative characteristics of the catalysis of gasoline reforming obtained at different stages of the process allows us to establish the chemistry and reaction mechanism and the laws of the chemical degree of conversion of individual hydrocarbon groups during all stages of catalytic reforming. As a result of studying the process of catalytic reforming of straight-run gasoline fractions НЕФТЕХИМИЯ НЕФТЬ И ГАЗ 2020. 2 (116) 103 О 2 (85–180°С), a chemistry and a reaction mechanism are established that are based on the following reactions: dehydrocyclization of paraffin hydrocarbons, dehydrogenation and dehydroisomerization of naphthenic, isomerization of naphthenic and paraffin hydrocarbons. Comparison of the physicochemical properties and group hydrocarbon composition of the hydrogenate and reforming products shows that the amount of n-paraffin and naphthenic hydrocarbons after catalytic reforming is reduced by 3–4times than in the originalgasoline, and the concentration of aromatic hydrocarbons is significantly increased due to the cyclane dehydrogenation reaction and dehydrocyclization of normal paraffins. Set forth in article information on changing the group and individual hydrocarbon composition of gasoline in various stages of the catalytic reforming process, can serve as a basis for optimal control of technological process of catalytic reforming and is a priority in the production of highquality grades of motor fuel and petrochemical development in the processing of local oil and gas Republic of Kazakhstan.
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Saad, M. A., N. H. Abdurahman, Rosli Mohd Yunus, Mohammed Kamil e Omar I. Awad. "An Overview of Reforming Technologies and the Effect of Parameters on the Catalytic Performance of Mesoporous Silica/Alumina Supported Nickel Catalysts for Syngas Production by Methane Dry Reforming". Recent Innovations in Chemical Engineering (Formerly Recent Patents on Chemical Engineering) 13, n. 4 (2 giugno 2020): 303–22. http://dx.doi.org/10.2174/2405520413666200313130420.

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Synthetic gas - a combination of (H2) and (CO) - is an important chemical intermediate for the production of liquid hydrocarbon, olefin, gasoline, and other valuable chemicals. Several reforming methods that use steam, carbon dioxide, and oxygen in the presence of various catalytic systems have been extensively investigated, and this paper reviews the recent research on the state-of-the-art of reforming technologies and the effect of parameters on the catalytic activity of mesoporous silica/alumina supported nickel catalysts for syngas production by methane dry reforming. First, we provide an overview of reforming technologies, including methane dry reforming, steam methane reforming, partial oxidation of CH4, and auto thermal reforming of CH4. Then, we review the literature on dry reforming catalysts. Next, we describe recent findings on the effect of parameters on the catalytic activity of mesoporous silica/alumina supported nickel catalysts for syngas production. Finally, we make proposals for future research. This study can help achieve a better understanding of the reforming technologies and the effects of parameters on catalytic performance for syngas production, thus contributing to the development of green technologies.
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Qing, Shaojun, Xiaoning Hou, Yajie Liu, Lindong Li, Xiang Wang, Zhixian Gao e Weibin Fan. "Strategic use of CuAlO2 as a sustained release catalyst for production of hydrogen from methanol steam reforming". Chemical Communications 54, n. 86 (2018): 12242–45. http://dx.doi.org/10.1039/c8cc06600k.

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4

Aboul-Gheit, Ahmed, e Salwa Ghoneim. "Catalysis in the Petroleum Naphtha Catalytic Reforming Process". Recent Patents on Chemical Engineeringe 1, n. 2 (1 giugno 2008): 113–25. http://dx.doi.org/10.2174/2211334710801020113.

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Aboul-Gheit, Ahmed K., e Salwa A. W. Ghoneim. "Catalysis in the Petroleum Naphtha Catalytic Reforming Process". Recent Patents on Chemical Engineering 1, n. 2 (9 gennaio 2010): 113–25. http://dx.doi.org/10.2174/1874478810801020113.

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Safiullina, L. F., I. M. Gubaydullin, K. F. Koledina e R. Z. Zaynullin. "Sensitivity analysis of the mathematical model of catalytic reforming of gasoline". Computational Mathematics and Information Technologies 3, n. 2 (2019): 43–53. http://dx.doi.org/10.23947/2587-8999-2019-2-2-43-53.

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7

Park, Yeongsu, Tomoaki Namioka, Kunio Yoshikawa, Seonah Roh e Woohyun Kim. "213 Catalytic Reforming of Model Compounds of Pyrolysis Tars(International session)". Proceedings of the Symposium on Environmental Engineering 2008.18 (2008): 209–12. http://dx.doi.org/10.1299/jsmeenv.2008.18.209.

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O'Malley, Alexander J., Stewart F. Parker e C. Richard A. Catlow. "Neutron spectroscopy as a tool in catalytic science". Chemical Communications 53, n. 90 (2017): 12164–76. http://dx.doi.org/10.1039/c7cc05982e.

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The unique power of neutron spectroscopy to probe molecular behaviour in catalytic systems is illustrated. Vibrational spectroscopy and quasielastic scattering techniques are introduced, along with their use in probing methanol-to-hydrocarbons and methane reforming catalysis, and also hydrocarbon behaviour in microporous catalysts.
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Bromberg, L. "Plasma catalytic reforming of methane". International Journal of Hydrogen Energy 24, n. 12 (dicembre 1999): 1131–37. http://dx.doi.org/10.1016/s0360-3199(98)00178-5.

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Sharikov, Yu V., e P. A. Petrov. "Universal model for catalytic reforming". Chemical and Petroleum Engineering 43, n. 9-10 (settembre 2007): 580–84. http://dx.doi.org/10.1007/s10556-007-0103-z.

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Tesi sul tema "Catalytic reforming"

1

Shao, Huifang. "Bimetallic carbides as catalysts for dry reforming and steam reforming". Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4761.

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Thesis (Ph. D.)--West Virginia University, 2006.
Title from document title page. Document formatted into pages; contains x, 174 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 155-166).
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El-Bousiffi, M. A. "The dynamics of catalytic steam reforming". Thesis, Swansea University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.636778.

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This thesis describes a study of catalysed steam methane reforming. A microreactor of 3 mm bore, operated and controlled by computer has been used. The catalyst employed was an industrial type steam reforming nickel oxide-alumina catalyst containing 15% nickel. The experiments were performed at temperatures of industrial interest in the range of 600-840°C. The pressure range was 2.5-9 bar, at hydrogen to methane ratios of 0.5-2 and steam to methane ratios of 2-3.1. The catalyst was initially activated at 700°C in a flow of steam and hydrogen (7:1) for 16 hours. Initially, the activity of the catalyst was very high then after 16 hours of operation it started to decline to reach its lowest level after 60 hours of operation despite reactivation. Subsequent activation methods including hydrogen reduction and temperature treatment were found to have dynamic effects on catalyst activity. An important improvement in the activity of the catalyst at lower temperature was established by incorporating a dynamic sequence of temperature changes that included some experiments at temperatures within the range 750-850°C. The dynamics of several such experiments were measured and recorded. The improvement in activity at lower temperature following a high temperature experiments gradually declined at a rate that was much slower than the dynamics of mass transfer and heat transfer in the system. The experimental results were used to examine a dual reaction mechanism for the reforming process. The reaction velocity coefficients established by non-linear parameter estimation were studied as function of temperature, pressure and composition.
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Sotelo-Boyas, Rogelio. "Fundamental kinetic modeling of the catalytic reforming process". Texas A&M University, 2005. http://hdl.handle.net/1969.1/4670.

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In this work, a fundamental kinetic model for the catalytic reforming process has been developed. The complex network of elementary steps and molecular reactions occurring in catalytic reforming has been generated through a computer algorithm characterizing the various species by vectors and Boolean relation matrices. The algorithm is based on the fundamental chemistry occurring on both acid and metal sites of the catalyst. Rates are expressed for each of the elementary steps involved in the transformation of the intermediates. The Hougen-Watson approach is used to express the rates of the molecular reactions occurring on the metal sites of the catalyst. The single event approach is used to account for the effect of structure of reactant and activated complex on the rate coefficients of the elementary steps occurring on the acid sites. This approach recognizes that even if the number of elementary steps is very large they belong to a very limited number of types, and therefore it is possible to express the kinetics of elementary steps by a reduced number of parameters. In addition, the single event approach leads to rate coefficients that are independent of the feedstock, due to their fundamental chemical nature. The total number of parameters at isothermal conditions is 45. To estimate these parameters, an objective function based upon the sum of squares of the residuals was minimized through the Marquardt algorithm. Intraparticle mass transport limitations and deactivation of the catalyst by coke formation are considered in the model. Both the Wilke and the Stefan-Maxwell approaches were used to calculate the concentration gradients inside of the particle. The heterogeneous kinetic model was applied in the simulation of the process for typical industrial conditions for both axial and radial flow fixed bed reactors. The influence of the main process variables on the octane number and reformate volume was investigated and optimal conditions were obtained. Additional aspects studied with the kinetic model are the reduction of aromatics, mainly benzene. The results from the simulations agree with the typical performance found in the industrial process.
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Nguyen, Minh Hoang. "Microwave Assisted Catalytic Dry Reforming of Methane". Thesis, Curtin University, 2019. http://hdl.handle.net/20.500.11937/77745.

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In this project, the active and stable catalysts were successfully developed for methane reforming reactions under microwave heating. The monometallic Co, Cu, and Mo catalysts supported on either AhO3 or TiO2 were inactive under all tested conditions whilst their respective bimetallic CoMo and CuMo catalysts were highly active and stable at low microwave powers to produce desirable syngas ratios. The activation mechanism of metallic­based catalysts for reforming reactions under microwave heating was explored.
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Praharso, Praharso School of Chemical Engineering &amp Industrial Chemistry UNSW. "The autothermal reforming of artificial gasoline". Awarded by:University of New South Wales. School of Chemical Engineering and Industrial Chemistry, 2003. http://handle.unsw.edu.au/1959.4/19294.

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Stringent legislation on control of vehicle exhaust emissions has led to consideration of alternative means of reducing emissions, with hydrogen fuel cell powered vehicles being accepted as one favoured possibility. However, the difficulties of storing and distributing hydrogen as a fuel are such that the conversion of more readily available fuels to hydrogen on board the vehicle may be required. The production of hydrogen by the partial oxidation of isooctane over Rh/Al2O3, Rh/CeO2-?l2O3 and Rh/CeO2-ZrO2 catalysts has been investigated. Oxidation was initiated at temperatures between 200 ?220 oC. The yield of hydrogen was 100%. CeO2-ZrO2 was found to be the best support. The production of hydrogen by the autothermal reforming of artificial gasoline has been studied. Part of gasoline is oxidised to produce heat and steam to promote the steam reforming of unburnt gasoline to produce hydrogen. The use of platinum impregnated on ceria supports (active for oxidation) and a commercial nickel based catalyst (Ni-com), for steam reforming of gasoline have been explored. Initiation of oxidation of artificial gasoline over unreduced platinum based catalysts occurred at temperature as low as 150 oC, depending on the oxygen:carbon ratio and the liquid hydrocarbon used. Detailed kinetic studies of the steam reforming of isooctane and artificial gasoline (a mix of cyclohexane, isooctane and octane) over pre-reduced Ni-com catalysts showed that the reaction was 0.17 order in isooctane and 0.54 order in steam, whilst the reaction was 0.08 order in artificial gasoline and 0.23 order in steam. Mechanisms have been proposed to account for the dual site surface reaction with dissociative adsorption of isooctane or artificial gasoline and steam. Combined oxidation and steam reforming systems (autothermal reforming) using Pt/CeO2 as a front catalyst bed and Ni-com as the rear bed at the feed conditions of oxygen:carbon (O:C) ratio of ca.1.2 and steam:carbon (S:C) ratio of ca.2, produces ca. 3.5 moles of hydrogen per mole of gasoline fed. The system reaction temperature could be controlled by adjusting the O:C and S:C ratios in feed.
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Luk, Kar Tsun. "Dry reforming in a microwave plasma /". View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?CENG%202005%20LUK.

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Araque, Marin Marcia Carolina. "Glycerol valorisation by catalytic steam reforming for hydrogen production". Strasbourg, 2011. https://publication-theses.unistra.fr/restreint/theses_doctorat/2011/ARAQUE_MARIN_Marcia_Carolina_2011.pdf.

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La thèse de doctorat avait comme objectif l’étude de la production d’hydrogène par vaporeformage catalytique du glycérol. Les catalyseurs développés dans ce travail sont des oxydes mixtes cérine-zircone de structure fluorite auxquels des oxydes de métaux de transition (Co) ou des métaux nobles (Ru/Rh) ont été ajoutés. L’effet de la nature de l’élément ajouté (Ru, Rh, Co-Rh, Co-Ru), de la quantité de métaux nobles (0,5 %, 1,2%) et du rapport massique CeO2/ZrO2 (0,65/0,35; 0,8/0,2; 0,2/0,8) a été étudié. Les caractérisations des catalyseurs avant test montrent que la présence de métaux nobles favorise les propriétés re-dox de la fluorite : abaissement de la température de réduction de l’oxyde de cérium. Cependant, le pourcentage de réduction de la cérine n’augmente qu’en présence de cobalt et métal noble. Les propriétés red-ox sont les plus marquées pour des rapports Ce/Zr élevés. La présence de Rh ou de Ru augmente l’activité catalytique et la stabilité du catalyseur par rapport à Ce-Zr ou Ce-Zr-Co. Le Rh a une activité supérieure à celle du Ru et l’addition du Rh peut se limiter à 0,5 % en masse. L’augmentation du rapport Ce/Zr est aussi favorable à l’activité catalytique. En conséquence, le meilleur catalyseur de production d’hydrogène par vaporeformage du glycérol est l’oxyde mixte Ce-Zr-Co-Rh riche en cérium. La production d’hydrogène et la stabilité catalytique ont été améliorées avec ce catalyseur soit en modifiant la configuration du lit catalytique (décomposition plus importante donc vaporeformage des produits secondaires), soit par addition d’oxygène en faible quantité (gazéification du carbone présent sur la surface favorisée)
This work presents the H2 production by glycerol steam reforming (GSR) using as catalysts mixed fluorite-type oxides of Ce-Zr-(Ru/Rh) and Ce-Zr-Co-(Ru/Rh). The effect of the active phase (Ru, Rh, Co-Ru, Co-Rh), the amount of the noble metal (0. 5% wt, 1. 2 % wt), and the mass CeO2/ZrO2 ratio (0. 65/0. 35, 0. 8/0. 2, 0. 2/0. 8) were studied. The characterisation of the catalysts before test showed that the introduction noble metals favoured the redox properties of the mixed oxides by lowering the temperature of reduction. However only with the presence of Co and the noble metal the reducibility capacity of the mixed oxides increased (% Ce reduced). The redox properties were also enhanced by the higher amount of Ce in the mixed oxide. The presence of the noble metals (Ru/Rh) increases the catalytic activity and stability respect to Ce-Zr and Ce-Zr-Co catalysts. The increase in the amount of noble metal did not present a significant change but the increase in the Ce amount enhanced the stability and selectivity towards H2. The comparison between equivalent series of Ru and Rh catalysts shows that the Rh oxides exhibit a better catalytic behaviour. The catalyst with the best performance towards the production of H2 was the Ce-Zr-Co-Rh mixed oxide rich in cerium. Additional tests were performed using this catalyst and it was found that improvements of the process of GSR can be achieved by modification of the catalytic bed configuration (favour the steam reforming of glycerol decomposition by-products) and by the addition of low quantities of O2 to the reactant flow (improve carbon gasification and catalyst stability)
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Evans, Samuel E. "Catalytic reforming of biogas using nickel based perovskite materials". Thesis, Keele University, 2017. http://eprints.keele.ac.uk/3529/.

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The utilisation of biogas as an energy source or as a feed stock for the chemical industry would help to lower the present wasteful and environmentally unfriendly venting of greenhouse gases to the atmosphere. One obstacle to this becoming a reality include finding a catalyst that is active towards carbon dioxide reforming of methane as well as resistance to carbon deposition and sulphur poisoning. As a potential alternative to supported nickel catalysts, a nickel doped perovskite has been produced via a hydrothermal synthesis method for reforming biogas. The selected perovskite, SrZrO3, was doped with 4 mol % nickel into the structure and shown to be phase pure by XRD. This material was rigorously tested catalytically using a range of biogas conditions. 4 mol% Ni doped SrZrO3 was shown to be resistant to carbon deposition under high temperature, methane rich biogas reforming conditions with no observable trend between the amount of carbon formed and the time on stream. This catalyst showed high activity and selective towards the formation of the desired products, an equimolar mixture of hydrogen and carbon monoxide. As naturally derived biogas is not a pure mixture of methane and carbon dioxide, studies into the effect that two of the other important components of biogas, water and sulphur containing compounds, were carried out. The perovskite material was seen to be stable towards continued dry reforming of methane irrespective of the inclusion of water, and at elevated reaction temperatures was able to convert the water into the required products of hydrogen and carbon monoxide. The effect of hydrogen sulphide was studied and the perovskite material was seen to be susceptible to sulphur poisoning. However the extent and the recovery from this type of deactivation was an improvement on that seen by Ni/YSZ and 5% ceria doped Ni/YSZ.
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Min, Zhenhua. "Catalytic steam reforming of biomass tar using iron catalysts". Thesis, Curtin University, 2010. http://hdl.handle.net/20.500.11937/184.

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Biomass has become an increasingly important renewable source of energy forenhanced energy security and reduced CO[subscript]2 emissions. Gasification is at the core of many biomass utilisation technologies for such purposes as the generation of electricity and the production of hydrogen, liquid fuels and chemicals. However, gasification faces a number of technical challenges to become a commercially feasible renewable energy technology. The most important one is the presence of tar in the gasification product gas. The ultimate purpose of this thesis was to investigate the catalytic reforming of tar using cheap catalysts as an effective means of tar destruction.In this thesis, natural ilmenite ore and novel char-supported catalysts were studied as catalysts for the steam reforming of biomass tar derived from the pyrolysis of mallee biomass in situ in two-stage fluidised-bed/fixed-bed quartz reactors. In addition to the quantification of tar conversion, the residual tar samples were also characterised with UV-fluorescence spectroscopy. Both fresh and spent catalysts were characterised with X-ray diffraction spectroscopy, FT-Raman spectroscopy and thermogravimetric analysis.The results indicate that ilmenite has activity for the reforming of tar due to its highly dispersed iron-containing species. Both the externally added steam and low concentration oxygen affect the tar reforming on ilmenite significantly. The properties of biomass affect the chemical composition of its volatiles and therefore their reforming with the ilmenite catalyst. Compared with sintering, coke deposited on ilmenite is the predominant factor for its deactivation.During the steam reforming process, the char-supported iron/nickel catalysts exhibit very high activity for the reforming of tar. In addition, NO[subscript]x precursors could be decomposed effectively on the char-supported iron catalyst during the steam reforming process. The hydrolysis of HCN and the decomposition of NH[subscript]3 on the catalyst are the key reactions for the catalytic destruction of NO[subscript]x precursors.The kinetic compensation effects demonstrate that the reaction pathways on the char-supported catalysts are similar but different from those on ilmenite. The proprieties of catalyst support could play important roles for the activities of the catalysts and the reaction pathways on the catalysts. The char support as part of the char-supported catalysts can undergo significant structural changes during the catalytic reforming of biomass volatiles.
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Emery, Adrian Pater. "A combined catalytic and FT-IR study of platinum rhenium catalysts". Thesis, University of Reading, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363713.

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Libri sul tema "Catalytic reforming"

1

Little, Donald M. Catalytic reforming. Tulsa, Okla: PennWell Books, 1985.

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2

1946-, Antos George J., e Aitani Abdullah M. 1960-, a cura di. Catalytic naphtha reforming. 2a ed. New York: Marcel Dekker, 2004.

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3

Start︠s︡ev, Anatoliĭ N. Sulʹfidnye katalizatory gidroochistki: Sintez, struktura, svoĭstva. Novosibirsk: Akademicheskoe izd-vo "Geo", 2007.

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1946-, Antos George J., Aitani Abdullah M. 1960- e Parera José M. 1930-, a cura di. Catalytic naphtha reforming: Science and technology. New York: M. Dekker, 1995.

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Masli͡anskiĭ, G. N. Kataliticheskiĭ riforming benzinov: Khimii͡a i tekhnologii͡a. Leningrad: "Khimii͡a," Leningradskoe otd-nie, 1985.

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Borowiec, Zdzisław. Optymalizacja składu klasowo-grupowego surowca do wytwarzania węglowodorów aromatycznych: Metoda reformowania katalitycznego. Kraków: Politechnika Krakowska, 1993.

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Senʹkov, G. M. Promyshlennye katalizatory riforminga. Minsk: "Nauka i tekhnika", 1986.

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Berg, G. A. Kataliticheskoe gidrooblagorazhivanie nefti͡a︡nykh ostatkov. Moskva: "Khimii͡a︡," Leningradskoe otd-nie, 1986.

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Berman, Alexander. Development of catalysts for solar reforming of light hydrocarbons: Final report for the period 1.8.94-31.5.96. Jerusalem]: State of Israel, Ministry of Energy and Infrastructure, Division of Research and Development, 1996.

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Wiehe, Irwin A. Process chemistry of petroleum macromolecules. Boca Raton: CRC Press, 2008.

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Capitoli di libri sul tema "Catalytic reforming"

1

le Goff, Pierre-Yves, William Kostka e Joseph Ross. "Catalytic Reforming". In Springer Handbook of Petroleum Technology, 589–616. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-49347-3_18.

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Gjervan, Torbjørn, Rune Prestvik e Anders Holmen. "Catalytic Reforming". In Basic Principles in Applied Catalysis, 125–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-05981-4_4.

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Balci, Volkan, İbrahim Şahin e Alper Uzun. "Catalytic Naphtha Reforming". In Advances in Refining Catalysis, 177–218. New York : Routledge, [2017]: CRC Press, 2017. http://dx.doi.org/10.1201/9781315370125-8.

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Sinfelt, J. H. "Catalytic Reforming of Hydrocarbons". In Catalysis, 257–300. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-49988-3_5.

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Kolb, G. "Catalytic Methanol Steam Reforming". In Encyclopedia of Membranes, 322–24. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-44324-8_1670.

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Kolb, G. "Catalytic Methanol Steam Reforming". In Encyclopedia of Membranes, 1–3. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-40872-4_1670-1.

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Lapinski, Mark P., Stephen Metro, Peter R. Pujadó e Mark Moser. "Catalytic Reforming in Petroleum Processing". In Handbook of Petroleum Processing, 229–60. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-14529-7_1.

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Lapinski, Mark P., Steve Metro, Peter R. Pujadó e Mark Moser. "Catalytic Reforming in Petroleum Processing". In Handbook of Petroleum Processing, 1–25. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-05545-9_1-1.

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Baudot, A. "Off-Gas from Catalytic Reforming". In Encyclopedia of Membranes, 1422–23. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-44324-8_419.

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Baudot, A. "Off-Gas from Catalytic Reforming". In Encyclopedia of Membranes, 1–2. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-40872-4_419-1.

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Atti di convegni sul tema "Catalytic reforming"

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Fedirchyk, Igor, Oleg Nedybaliuk, Valeriy Chernyak e Valentyna Demchyna. "Plasma-catalytic reforming of ethanol". In 2015 International Young Scientists Forum on Applied Physics (YSF). IEEE, 2015. http://dx.doi.org/10.1109/ysf.2015.7333205.

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2

Duo Wang e Wenqiao Yuan. "Catalytic reforming of biomass gasification syngas". In 2010 Pittsburgh, Pennsylvania, June 20 - June 23, 2010. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2010. http://dx.doi.org/10.13031/2013.29742.

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3

Dan, Monica, Maria Mihet e Mihaela D. Lazar. "Catalytic glycerol steam reforming for hydrogen production". In 10TH INTERNATIONAL CONFERENCE PROCESSES IN ISOTOPES AND MOLECULES (PIM 2015). AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4938451.

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Brus, Grzegorz, Zygmunt Kolenda, Shinji Kimijima e Janusz S. Szmyd. "An Analysis of Heat Transfer Processes in an Internal Indirect Reforming Type Solid Oxide Fuel Cell". In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22785.

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This paper presents experimental and numerical studies on the fuel reforming process on an Ni/YSZ catalyst. Nickel is widely known as a catalyst material for Solid Oxide Fuel Cells. Because of its prices and catalytic properties, Ni is used in both electrodes and internal reforming reactors. However, using Ni as a catalyst carries some disadvantages. Carbon formation is a major problem during a methane/steam reforming reaction based on Ni catalysis. Carbon formation occurs between nickel and metal-support, creating fibers which damage the catalytic property of the reactor. To prevent carbon deposition, the steam-to-carbon ratio is kept between 3 and 5 throughout the entire process. To optimize the reforming reactors, detailed data about the entire reforming process is required. In the present paper kinetics of methane/steam reforming on the Ni/YSZ catalyst was experimentally investigated. Measurements including different thermal boundary conditions, the fuel flow rate and the steam-to-methane ratios were performed. The reforming rate equation derived from experimental data was used in the numerical model to predict synthetic gas composition at the outlet of the reformer.
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Park, Hyung Gyu, Jaewon Chung, Costas P. Grigoropoulos, Ralph Greif, Mark Havstad e Jefffey D. Morse. "Transport in a Microfluidic Catalytic Reactor". In ASME 2003 Heat Transfer Summer Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ht2003-47216.

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A study of the heat and mass transfer, flow, and thermodynamics of the reacting flow in a catalytic micro-reactor is presented. Methanol reforming is utilized in the fuel processing system driving a micro-scale proton exchange membrane fuel cell. Understanding the flow and thermal transport phenomena as well as the reaction mechanisms is essential for improving the efficiency of the reforming process as well as the quality of the processed fuel. Numerical studies have been carried out to characterize the transport in a silicon microfabricated reactor system. On the basis of these results, optimized conditions for fuel processing are determined.
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"Autonomous catalytic hydrogen generator based on bioethanol steam reforming". In Chemical technology and engineering. Lviv Polytechnic National University, 2021. http://dx.doi.org/10.23939/cte2021.01.067.

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7

Asad, Usman, e Ming Zheng. "EGR Oxidation and Catalytic Fuel Reforming for Diesel Engines". In ASME 2008 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/ices2008-1684.

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Exhaust gas recirculation (EGR) treatment techniques that include combustible substance oxidation, catalytic fuel reforming, and partial bypass-flow control have been experimentally investigated on a single cylinder diesel engine. Application tests are conducted to investigate the effects of the reformed gases on the diesel combustion characteristics and exhaust emissions. This research is aimed at stabilizing and expanding the limits of heavy EGR during steady and transient operations by enhancing the premixed combustion that may significantly alleviate problems with soot formation and cyclic variations. Additionally, the heavy treated EGR is applied to enable in-cylinder low temperature combustion. A preliminary investigation on the effects of water addition to the high temperature catalyst bed is also conducted. The potential of EGR reforming is also examined for possible generation of synthetic EGR (CO2) at low engine loads. The effectiveness of the treated EGR on engine emission and operating characteristics are therefore reported.
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Hotz, Nico. "Nano-Structured Catalytic Material for Solar-Powered Biofuel Reforming". In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-89729.

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The main goal of this project is to combine two renewable energy conversion technologies (low-temperature fuel cells and solarthermal collectors) to achieve synergies in terms of cost and energetic efficiency compared to systems based on a single energy source and energy conversion technology. Direct solar-to-electric energy conversion, such as photovoltaics, is currently not economically competitive with traditional electric power generation. Fuel cell technology using alcoholic fuel possibly generated from biomass (e.g. methanol) is not competitive in terms of costs either. The system proposed for this project is based on relatively cheap, commercially available hardware components (intermediate-temperature solar collector, pressurized gas tank, hydrogen-fed Proton Exchange Membrane (PEM) fuel cell) and benefits in terms of energetic efficiency from the cost-free supply of solar heat. By applying micro-fabrication technology and nano-scale structures (e.g. for catalytic surfaces), the efficiency of all individual system components and of the entire system can be increased drastically. The catalytic activity of micro-reactors containing this foam-like ceramic is tested in terms of their ability to convert alcoholic biofuel (e.g. methanol) to a hydrogen-rich gas mixture with low concentrations of carbon monoxide (up to 75% hydrogen content and less than 0.2% CO, for the case of methanol). This gas mixture is subsequently used in a low-temperature fuel cell, converting the hydrogen directly to electricity. A low concentration of CO is crucial to avoid poisoning of the fuel cell catalyst. Since conventional Polymer Electrolyte Membrane (PEM) fuel cells require CO concentrations far below 100 ppm and since most methods to reduce the mole fraction of CO (such as Preferential Oxidation or PROX) have CO conversions of up to 99%, the alcohol fuel reformer has to achieve initial CO mole fractions significantly below 1%. The catalyst and the porous ceramic reactor of the present study can successfully fulfill this requirement.
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Scenna, Richard, e Ashwani K. Gupta. "Preheats Effect on Distributed Reaction Fuel Reforming". In ASME 2015 Power Conference collocated with the ASME 2015 9th International Conference on Energy Sustainability, the ASME 2015 13th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2015 Nuclear Forum. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/power2015-49039.

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Conventional non-catalytic fuel reforming provides low efficiency, large amounts of char and tar and limited control on chemical composition of the syngas produced. In this paper volume distributed reaction technique is used to enhance reformate quality as compared to conventional reforming that uses non-catalytic reforming. Reforming of middle distillate fuels typically utilize preheats of 300–600°C[1,2]. This work investigates the intermediate regimes between volume distributed reaction regime and conventional flame regime for the reforming of JP8 through the chemical and mixing time scale. The results showed that reformate concentrations of fixed gases and most low molecular weight hydrocarbons changed gradually with air preheats. Reaction regime did not drastically change reformate products except for acetylene. In conventional flame regime acetylene concentration rapidly increased upon on entering the reactor.
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Al-Swai, Basem M., N. B. Osman e Bawadi Abdullah. "Catalytic performance of Ni/MgO catalyst in methane dry reforming". In THE 2ND INTERNATIONAL CONFERENCE ON APPLIED SCIENCE AND TECHNOLOGY 2017 (ICAST’17). Author(s), 2017. http://dx.doi.org/10.1063/1.5005361.

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Rapporti di organizzazioni sul tema "Catalytic reforming"

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Bromberg, L., D. R. Cohn, A. Rabinovich e N. Alexeev. Plasma catalytic reforming of methane. Office of Scientific and Technical Information (OSTI), agosto 1998. http://dx.doi.org/10.2172/305623.

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Ellzey, Janet L., Erica Belmont e Colin H. Smith. Non-Catalytic Reforming with Applications to Portable Power. Fort Belvoir, VA: Defense Technical Information Center, ottobre 2013. http://dx.doi.org/10.21236/ada597121.

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Menkara, Hisham. High Efficiency Solar-based Catalytic Structure for CO2 Reforming. Office of Scientific and Technical Information (OSTI), settembre 2013. http://dx.doi.org/10.2172/1121751.

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Czernik, S., D. Wang e E. Chornet. Production of hydrogen from biomass by catalytic steam reforming of fast pyrolysis oil. Office of Scientific and Technical Information (OSTI), agosto 1998. http://dx.doi.org/10.2172/305621.

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Carpenter, D., M. Ratcliff e D. Dayton. Catalytic Steam Reforming of Gasifier Tars: On-Line Monitoring of Tars with a Transportable Molecular-Beam Mass Spectrometer; Milestone Completion Report. Office of Scientific and Technical Information (OSTI), maggio 2002. http://dx.doi.org/10.2172/15000383.

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