Download or read book Catalytic Methane Partial Oxidation Over Silica and Silica Supported Iron Phosphate written by Mohammad B. Al-Sahali and published by . This book was released on 2000 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 2 written by and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spatially Resolved Species and Temperature Profiles in the Catalytic Partial Oxidation of Methane and Ethane written by Nick Joseph Degenstein and published by . This book was released on 2007 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalysis and the Mechanism of Methane Conversion to Chemicals written by Toshihide Baba and published by Springer Nature. This book was released on 2020-04-18 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces various types of reactions to produce chemicals by the direct conversion of methane from the point of view of mechanistic and functional aspects. The chemicals produced from methane are aliphatic and aromatic hydrocarbons such as propylene and benzene, and methanol. These chemicals are created by using homogeneous catalysts, heterogeneous catalysts such as zeolites, and biocatalysts such as enzymes. Various examples of methane conversion reactions that are discussed have been chosen to illustrate how heterogeneous and homogenous catalysts and biocatalysts and/or their reaction environments control the formation of highly energetic species from methane contributing to C-C and C-O bond formation.
Download or read book Partial Oxidation of Methane Over Vanadia silica Cogel Catalysts written by Bunjerd Jongsomjit and published by . This book was released on 1998 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selective Methane Oxidation Over Promoted Oxide Catalysts Quarterly Technical Progress Report September 8 1992 November 30 1992 written by and published by . This book was released on 1993 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Support effects on catalytic reactions, especially of highly exothermic oxidation reactions, can be very significant. Since we had shown that a MoO3/SiO2 catalyst, especially when used in a double bed configuration with a Sr/La2O3 catalyst, can selectively oxidize methane to formaldehyde, the role of the SiO2 support was investigated. Therefore, partial oxidation of methane by oxygen to form formaldehyde, carbon oxides, and C2 products (ethane and ethene) has been studied over silica catalyst supports (fumed Cabosil and Grace 636 silica gel) in the 630-780°C temperature range under ambient pressure. When relatively high gas hourly space velocities (GHSV) were utilized, the silica catalysts exhibit high space time yields (at low conversions) for methane partial oxidation to formaldehyde, and the C2 hydrocarbons were found to be parallel products with formaldehyde. In general, the selectivities toward CO were high while those toward CO2 were low. Based on the present results obtained by a double catalyst bed experiment, the observations of product composition dependence on the variation of GHSV (i.e. gas residence time), and differences in apparent activation energies of formation of C2H6, and CH2O, a reaction mechanism is proposed for the activation of methane over the silica surface. This mechanism can explain the observed product distribution patterns (specifically the parallel formation of formaldehyde and C2 hydrocarbons).
Download or read book Reaction Mechanism of Methane Partial Oxidation Over a Silica supported Molybdena Catalytst microform written by Roy Mauti and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1994 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of the Partial Oxidation of Methane to Formaldehyde Over Vanadium Oxide Catalysts Supported on Silica written by Benoit J. Kartheuser and published by . This book was released on 1993 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transient Studies of Low Temperature Catalysts for Methane Conversion written by and published by . This book was released on 1993 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes studies conducted during the past quarter on the partial oxidation of methane on the following catalysts: vanadium phosphate, unsupported and supported on silica, and on the silica (SiO[sub 2]) support. It was found that the unsupported vanadium phosphate catalyst exhibits some selectivity towards formaldehyde at relatively low methane conversions (up to 5% conversion). The selectivity decreases even further on the silica supported VPO catalyst without a significant increase in conversion. In the case of silica, the reaction temperature decreases, and the formaldehyde selectivity is higher than in the case of the VPO catalyst.
Download or read book Kinetics and Mechanism of Methane Selective Oxidation Over Silica supported Molybdena written by Nicholas Lawrence Ohler and published by . This book was released on 2005 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biogas written by Abd El-Fatah Abomohra and published by BoD – Books on Demand. This book was released on 2021-04-28 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anaerobic digestion (AD) is by far the most important technology for providing clean renewable energy to millions in rural areas of many developing countries. AD of biowastes produces both biomethane and anaerobic digestate as a byproduct that can be used further as a biofertilizer. Biowastes including sewage, food processing wastes, animal wastes, and lignocellulosic wastes typically produce biogas containing 55%–70% biomethane. In the context of energy consumption, more than 85% of the total energy consumed currently comes from non-renewable fossil resources. Biogas technology can provide sustainable, affordable, and eco-friendly energy through waste recycling. This book provides basic knowledge and recent research on biogas production, focusing on the enhancement of biomethane and production routes integrated with microalgae cultivation or agriculture.
Download or read book The Partial Oxidation of Methane on Supported silica Vanadium Oxide written by Shang Yang Chen and published by . This book was released on 1989 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Morphological Changes in a Nickel silica Catalyst During Preparation and Catalytic Activity for Partial Oxidation of Methane written by Ritubarna Banerjee and published by . This book was released on 2009 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalytic Partial Oxidation of Methane to Synthesis Gas Over Pt MgO Catalysts written by Min Yang and published by . This book was released on 2006 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Oxidation Over Dual Redox Catalysts written by and published by . This book was released on 1992 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Catalytic oxidation of methane to partial oxidation products, primarily formaldehyde and C[sub 2] hydrocarbons, was found to be directed by the catalyst used. In this project, it was discovered that a moderate oxidative coupling catalyst for C[sub 2] hydrocarbons, zinc oxide, is modified by addition of small amounts of Cu and Fe dopants to yield fair yields of formaldehyde. A similar effect was observed with Cu/Sn/ZnO catalysts, and the presence of a redox Lewis acid, Fe[sup III] or Sn[sup IV], was found to be essential for the selectivity switch from C[sub 2] coupling products to formaldehyde. The principle of double doping with an oxygen activator (Cu) and the redox Lewis acid (Fe, Sn) was pursued further by synthesizing and testing the CuFe-ZSM-5 zeolite catalyst. The Cu[sup II](ion exchanged) Fe[sup III](framework)-ZSM-5 also displayed activity for formaldehyde synthesis, with space time yields exceeding 100 g/h-kg catalyst. However, the selectivity was low and earlier claims in the literature of selective oxidation of methane to methanol over CuFe-ZSM-5 were not reproduced. A new active and selective catalytic system (M=Sb, Bi, Sn)/SrO/La[sub 2]O[sub 3] has been discovered for potentially commercially attractive process for the conversion of methane to C[sub 2] hydrocarbons, (ii) a new principle has been demonstrated for selectivity switching from C[sub 2] hydrocarbon products to formaldehyde in methane oxidations over Cu, Fe-doped zinc oxide and ZSM-5, and (iii) a new approach has been initiated for using ultrafine metal dispersions for low temperature activation of methane for selective conversions. Item (iii) continues being supported by AMOCO while further developments related to items (i) and (ii) are the objective of our continued effort under the METC-AMOCO proposed joint program.
Download or read book Direct Natural Gas Conversion to Value Added Chemicals written by Jianli Hu and published by CRC Press. This book was released on 2020-09-25 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Direct Natural Gas Conversion to Value-Added Chemicals comprehensively discusses all major aspects of natural gas conversion and introduces a broad spectrum of recent technological developments. Specifically, the book describes heterogeneous and homogeneous catalysis, microwave-assisted conversion, non-thermal plasma conversion, electrochemical conversion, and novel chemical looping conversion approaches. Provides an excellent benchmark resource for the industry and academics Appeals to experienced researchers as well as newcomers to the field, despite the variety of contributing authors and the complexity of the material covered Includes all aspects of direct natural gas conversion: fundamental chemistry, different routes of conversion, catalysts, catalyst deactivation, reaction engineering, novel conversion concepts, thermodynamics, heat and mass transfer issues, system design, and recent research and development Discusses new developments in natural gas conversion and future challenges and opportunities This book is as an excellent resource for advanced students, technology developers, and researchers in chemical engineering, industrial chemistry, and others interested in the conversion of natural gas.
