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Author : Michiel Boeckx
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (949 download)
Download or read book Integrated Catalytic Membrane Reactor for Oxidative Coupling of Methane written by Michiel Boeckx and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hamid Reza Godini
Publisher : epubli GmbH
ISBN 13 : 9783737512428
Total Pages : 144 pages
Book Rating : 4.5/5 (124 download)
Download or read book Analysis of Individual and Integrated Packed-Bed Membrane Reactors for Oxidative Coupling of Methane written by Hamid Reza Godini and published by epubli GmbH. This book was released on 2014-10-13 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: The procedure and the results of model-based and experimental analysis of individual and integrated porous packed-bed membrane reactor for Oxidative Coupling of Methane (OCM) process are provided.
Author : Norhafizah Che May
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (129 download)
Download or read book Simulation of Catalytic Membrane Reactor for Oxidative Coupling of Methane written by Norhafizah Che May and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael O'Neal Nutt
Publisher :
ISBN 13 :
Total Pages : 142 pages
Book Rating : 4.:/5 (34 download)
Download or read book Non-oxidative Coupling of Methane for Use in a Hydrogen Transporting Membrane Reactor written by Michael O'Neal Nutt and published by . This book was released on 2000 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 365 pages
Book Rating : 4.:/5 (684 download)
Download or read book OXIDATIVE COUPLING OF METHANE USING INORGANIC MEMBRANE REACTORS. written by and published by . This book was released on 1998 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research is to study the oxidative coupling of methane in catalytic inorganic membrane reactors. A specific target is to achieve conversion of methane to C2 hydrocarbons at very high selectivity and higher yields than in conventional non-porous, co-feed, fixed bed reactors by controlling the oxygen supply through the membrane. A membrane reactor has the advantage of precisely controlling the rate of delivery of oxygen to the catalyst. This facility permits balancing the rate of oxidation and reduction of the catalyst. In addition, membrane reactors minimize the concentration of gas phase oxygen thus reducing non selective gas phase reactions, which are believed to be a main route for the formation of CO(subscript x) products. Such gas phase reactions are a cause of decreased selectivity in the oxidative coupling of methane in conventional flow reactors. Membrane reactors could also produce higher product yields by providing better distribution of the reactant gases over the catalyst than the conventional plug flow reactors. Membrane reactor technology also offers the potential for modifying the membranes both to improve catalytic properties as well as to regulate the rate of the permeation/diffusion of reactants through the membrane to minimize by-product generation. Other benefits also exist with membrane reactors, such as the mitigation of thermal hot-spots for highly exothermic reactions such as the oxidative coupling of methane. The application of catalytically active inorganic membranes has potential for drastically increasing the yield of reactions which are currently limited by either thermodynamic equilibria, product inhibition, or kinetic selectivity.
Author :
Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (871 download)
Download or read book Methane Coupling by Membrane Reactor. Quarterly Technical Progress Report, June 25, 1995--September 24, 1995 written by and published by . This book was released on 1995 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research focus, for the development of a radial flow catalytic membrane reactor for studying methane coupling, concentrated on understanding the effects of pore size, catalyst loading and catalyst distribution inside the membrane, on the hydrocarbon selectivity. The experimental results from the catalytic studies of oxidative coupling of methane in the radial flow membrane reactors are summarized in this report and the reactor performances of three radial flow reactors with pore sizes of 0.02 [mu]m are interpreted by the energy dispersive X-ray digital mapping (EDX) technique. A conventional fixed bed catalytic reactor was set up and run under the same conditions as were used for the radial flow reactor studies. Two sources of samarium oxide catalysts were used in these experiments and their performances were compared in terms of C2 selectivity at same methane conversion. Compared to the monoclinic form of samarium oxide, the catalyst with cubic form was more active and selective for methane oxidative coupling. A general reactor model for oxidation reactions with distributed feed of oxygen and product removal strategies was proposed. Six types of feeding modes were analyzed and their feed distributions were optimized such that the desired product yields at the reactor outlet were maximized.
Author :
Publisher :
ISBN 13 :
Total Pages : 45 pages
Book Rating : 4.:/5 (684 download)
Download or read book Methane Coupling by Membrane Reactor. Quarterly Technical Progress Report, September 25, 1995--December 24, 1995 written by and published by . This book was released on 1996 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: The performance of the third type of catalytic membrane reactor configuration, with catalyst deposited in the membrane and no catalyst or inert materials in the tube side, was evaluated. The C2 selectivity obtained was about 10% due to the gas phase reaction in the empty tube side of the reactor. The membrane reactor with an oxygen-permeable dense membrane has been built. The use of a dense membrane will eliminate the loss of hydrocarbon from the tube side to the shell side, as observed in the Vycor glass membrane reactor. Also, air can be used as the oxygen source without contaminating the product. La/MgO was synthesized and will be used as the catalyst for the dense membrane reactor. This catalyst was reported in the literature to show significant improvement of C2 selectivity and yield for oxidative coupling of methane in a packed-bed reactor by using the operation mode of staged-feed of oxygen. A reactor mode for methane oxidative coupling in reactors with both distributed oxygen feed and C2 product removal was developed based on the general model of cross-flow reactors reported in the last quarterly report. A distributed oxygen feed could give rise to much higher C2 yield than the co-feed reactor as long as the space time is long enough. In the case of a two-membrane reactor, where oxygen is supplied by one membrane and products are removed through the other membrane, a high separation factor of C2 product to methane for the product-removal membrane is critical to achieve high C2 yield.
Author : A. Parmaliana
Publisher : Elsevier
ISBN 13 : 0080537308
Total Pages : 1005 pages
Book Rating : 4.0/5 (85 download)
Download or read book Natural Gas Conversion V written by A. Parmaliana and published by Elsevier. This book was released on 1998-09-17 with total page 1005 pages. Available in PDF, EPUB and Kindle. Book excerpt: On January 1988, the ascertained and economically accessible reserves of Natural Gas (NG) amounted to over 144,000 billion cubic meters worldwide, corresponding to 124 billion tons of oil equivalents (comparable with the liquid oil reserves, which are estimated to be 138 billion TOE). It is hypothesized that the volume of NG reserve will continue to grow at the same rate of the last decade. Forecasts on production indicate a potential increase from about 2,000 billion cubic meters in 1990 to not more than 3,300 billion cubic meters in 2010, even in a high economic development scenario. NG consumption represents only one half of oil: 1.9 billion TOE/y as compared to 3.5 of oil. Consequently, in the future gas will exceed oil as a carbon atom source. In the future the potential for getting energetic vectors or petrochemicals from NG will continue to grow. The topics covered in Natural Gas Conversion V reflect the large global R&D effort to look for new and economic ways of NG exploitation. These range from the direct conversion of methane and light paraffins to the indirect conversion through synthesis gas to fuels and chemicals. Particularly underlined and visible are the technologies already commercially viable. These proceedings prove that mature and technologically feasible processes for natural gas conversion are already available and that new and improved catalytic approaches are currently developing, the validity and feasibility of which will soon be documented. This is an exciting area of modern catalysis, which will certainly open novel and rewarding perspectives for the chemical, energy and petrochemical industries.
Author :
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (684 download)
Download or read book Methane Coupling by Membrane Reactor. Quarterly Technical Progress Report, March 25--June 24, 1996 written by and published by . This book was released on 1996 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: The experimental study was continued on methane oxidative coupling using an oxygen-permeable dense membrane reactor. The oxygen permeance through the dense membrane was measured and preliminary experiments were conducted with the catalytic membrane reactor. The oxygen permeance was found to be similar to that obtained earlier without catalyst packing. No C2 hydrocarbons were observed in the catalytic membrane reactor for methane coupling. In order to reduce the non-selective, total oxidation activity of the dense membrane material, the inner surface of the dense membrane tube was deposited by the sol-gel technique with BaCe{sub 0.6}Sm{sub 0.4}O3, which is a catalytic, oxygen-conductive material without total oxidation catalytic activity. The dense membrane tube was examined by XRD before and after the deposition. Catalytic experiments with the coated dense membrane reactor were carried out and higher C2 selectivity was observed than with the co-feed reactor.
Author : A. Holmen
Publisher : Elsevier
ISBN 13 : 0080879179
Total Pages : 585 pages
Book Rating : 4.0/5 (88 download)
Download or read book Natural Gas Conversion written by A. Holmen and published by Elsevier. This book was released on 1991-05-27 with total page 585 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings reflect the extensive fundamental and applied research efforts that are currently being made on the conversion of gas, in particular on the direct conversion of methane. The Symposium in Oslo focused on the following topics: Direct conversion of methane, Fischer-Tropsch chemistry, methanol conversion and natural gas conversion processes. The main aim was to present the state-of-the-art and progress currently being made within each of these areas. The book contains the papers presented and includes plenary lectures, short communications and posters. The papers will be of interest to scientists and engineers working in the field of gas conversion, transportation fuels, primary petrochemicals and catalysis.
Author : Andrzej Cybulski
Publisher : CRC Press
ISBN 13 : 1420028006
Total Pages : 828 pages
Book Rating : 4.4/5 (2 download)
Download or read book Structured Catalysts and Reactors written by Andrzej Cybulski and published by CRC Press. This book was released on 2005-11-02 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in structured catalysts is steadily increasing due to the already proven, as well as potential, advantages of these catalysts. Updating the comprehensive coverage of the first edition published in 1998 with the latest science and applications, Structured Catalysts and Reactors, Second Edition gives detailed information on all aspect
Author : Wolf
Publisher : Springer Science & Business Media
ISBN 13 : 9401574499
Total Pages : 556 pages
Book Rating : 4.4/5 (15 download)
Download or read book Methane Conversion by Oxidative Processes written by Wolf and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: A reasonable case could be made that the scientific interest in catalytic oxidation was the basis for the recognition of the phenomenon of catalysis. Davy, in his attempt in 1817 to understand the science associated with the safety lamp he had invented a few years earlier, undertook a series of studies that led him to make the observation that a jet of gas, primarily methane, would cause a platinum wire to continue to glow even though the flame was extinguished and there was no visible flame. Dobereiner reported in 1823 the results of a similar investigation and observed that spongy platina would cause the ignition of a stream of hydrogen in air. Based on this observation Dobereiner invented the first lighter. His lighter employed hydrogen (generated from zinc and sulfuric acid) which passed over finely divided platinum and which ignited the gas. Thousands of these lighters were used over a number of years. Dobereiner refused to file a patent for his lighter, commenting that "I love science more than money." Davy thought the action of platinum was the result of heat while Dobereiner believed the ~ffect ~as a manifestation of electricity. Faraday became interested in the subject and published a paper on it in 1834; he concluded that the cause for this reaction was similar to other reactions.
Download or read book Methane Coupling by Membrane Reactor. Quarterly Technical Progress Report, March 25, 1995--June 24, 1995 written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Research focus, for the development of a radial flow catalytic membrane reactor for studying methane coupling concentrated on understanding the effects of pore size on improving the hydrocarbon selectivity for the reaction. The effect of pressure on the reaction was also investigated. Experimental results from the catalytic studies of oxidative coupling of methane in the radial flow membrane reactors presented in this report augment earlier work on membranes of pore diameters of 2.0[mu]m, 0.2[mu]m, and 0.02[mu]m, indicating better performance with the larger pore diameter membranes. Higher operating pressures seem to enhance gas phase non-selective reactions during methane coupling. The chemistry of oxygen conducting materials that could be used as dense membranes in the membrane reactors was investigated by studying the catalytic activity of several oxygen conducting perovskites for methane coupling. Heavy metal oxides of lanthanum, strontium and iron, which form good oxygen conductors, showed very poor methane coupling activity. Perovskites of the Strontium-Cerium-Yttribium series showed moderate activity for methane coupling. These could serve as candidates for dense membrane synthesis, since they also have moderate oxygen conduction properties.
Author : D.M. Bibby
Publisher : Elsevier
ISBN 13 : 0080960707
Total Pages : 759 pages
Book Rating : 4.0/5 (89 download)
Download or read book Methane Conversion written by D.M. Bibby and published by Elsevier. This book was released on 1988-03-01 with total page 759 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings volume comprises the invited plenary lectures, contributed and poster papers presented at a symposium organised to mark the successful inauguration of the world's first commercial plant for production of gasoline from natural gas, based on the Mobil methanol-to-gasoline process. The objectives of the Symposium were to present both fundamental research and engineering aspects of the development and commercialization of gas-to-gasoline processes. These include steam reforming, methanol synthesis and methanol-to-gasoline. Possible alternative processes e.g. MOGD, Fischer-Tropsch synthesis of hydrocarbons, and the direct conversion of methane to higher hydrocarbons were also considered.The papers in this volume provide a valuable and extremely wide-ranging overview of current research into the various options for natural gas conversion, giving a detailed description of the gas-to-gasoline process and plant. Together, they represent a unique combination of fundamental surface chemistry catalyst characterization, reaction chemistry and engineering scale-up and commercialization.
Author : Yongxian Zeng
Publisher :
ISBN 13 :
Total Pages : 752 pages
Book Rating : 4.:/5 (394 download)
Download or read book Dense Mixed-conducting Ceramic Membrane Reactor for Oxidative Coupling of Methane written by Yongxian Zeng and published by . This book was released on 1998 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Angelo Basile
Publisher : John Wiley & Sons
ISBN 13 : 1118906802
Total Pages : 348 pages
Book Rating : 4.1/5 (189 download)
Download or read book Membrane Reactor Engineering written by Angelo Basile and published by John Wiley & Sons. This book was released on 2016-09-19 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Uniquely focussed on the engineering aspects of membrane reactors Provides tools for analysis with specific regard to sustainability Applications include water treatment, wastewater recycling, desalination, biorefineries, agro-food production Membrane reactors can bring energy saving, reduced environmental impact and lower operating costs
Author :
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (683 download)
Download or read book Methane Coupling by Membrane Reactor, Quarterly Technical Progress Report, September 1994--December 24, 1994 written by and published by . This book was released on 1995 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental studies presented in this report discuss the performance of porous VYCOR membrane reactors in which the oxidative coupling of methane was carried out in an excess of oxygen. This was accomplished by shortening the porous section of the membrane reactor and operating at lower W/F ratios. Results are also discussed from experiments in which methane gas flow was metered in from the high pressure shell side into the oxygen stream on the tube side of the membrane reactor. These studies indicated that the presence of gas phase oxygen downstream to the catalyst bed was detrimental for the C2 selectivity in the methane coupling reaction. Dense membrane synthesis and characterization results are presented which describe new approaches to dense membrane synthesis. Modifications to the 40 Angstrom pore diameter gamma alumina membranes to enhance their stability and pore filling of micron size pores on alpha alumina supports are discussed. Sr{sub 0.8}La{sub 0.2}FeO3, an oxygen conducting perovslcite synthesized in the Microfluidizer showed interesting DSC (Differential Scanning Calorimetry) and TGA (Thermo Gravimetric Analysis) spectra that indicated a change in the crystal structure at relatively moderate temperatures of 150°C and 350°C. This report also presents details of the design and experimental set-up of a catalytic membrane reactor in which the porous membrane is doped with the active catalyst and methane coupling occurs as the reactant gases pass through the membrane pores.
