Download or read book The Development of Ni Based Catalysts for Carbon Dioxide Reforming of Methane written by Pengfei Cao and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research and Development of Nickel Based Catalysts for Carbon Dioxide Reforming of Methane written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalysis by Ceria and Related Materials written by Alessandro Trovarelli and published by World Scientific. This book was released on 2013 with total page 909 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book follows the 2002 edition of Catalysis by Ceria and Related Materials, which was the first book entirely devoted to ceria and its catalytic properties. In the ten years since the first edition a massive amount of work has been carried out in the field, and ceria has gained a prominent position in catalysis as one of the most valuable material for several applications. This second edition covers fundamental and applied aspects of the latest advances in ceria-based materials with a special focus on structural, redox and catalytic features. Special emphasis is given to nano-engineered and nano-shaped systems which are a key factor in the predictive and rational design of ceria with novel properties.In addition, the book presents recent advances in emerging and traditional large-scale applications of ceria in catalysis, such as the treatment of emissions from mobile sources (including diesel and gasoline engines). The primary readership includes catalysis and material science researchers from academy and industry and postdoctorate and graduate students in chemistry, chemical engineering and physics.
Download or read book Reforming of Methane Over Ni based Catalyst written by Ye Wang and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dry reforming of methane represents an attractive way to the conversion of two greenhouse gases (CO2 and CH4) into valuable products. Transition metal Ni is universally considered as an alternative to noble metal for DRM, due to its high activity and low cost. However, Ni-based catalysts suffered deactivation resulted from sintering of the active phase and carbon deposition, thus its practical application is not actually possible. So, there is a need to develop a cost-effective catalyst, able to withstand high temperatures and able to resist deactivation.First, the Ni-Zr catalysts were prepared by the one step urea hydrolysis method and were evaluated on the dry reforming of methane. Secondly, different promoters (such as Y, Al, Mn, and Mg) with Ni-Zr were co-synthesized by the same method (urea hydrolysis). The relationship between performance and structure is analyzed by activity test and multiple characterizations, such as BET, XRD, H2-TPR, CO2-TPD, TEM, XPS and Raman. Among them, the Y-modified catalysts improved the resistance to carbon deposition by increasing the weak and medium-strength basic sites. Also, the presence of Al could enhance the catalytic performance due to larger pore volume and diameter after aluminum introduction. The addition of Mn led to the increase of the catalytic activity with time on stream because of a more stable structure of ZrO2 species and a redistribution of nickel species.Thus, the choices of different promoters result in diversification in the specific surface area, Ni0 crystallite size, and basicity, which may further affect the catalytic performance of prepared catalysts.
Download or read book New and Future Developments in Catalysis written by Hui Wang and published by Elsevier Inc. Chapters. This book was released on 2013-07-11 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fuel Cells Technologies for Fuel Processing written by Dushyant Shekhawat and published by Elsevier. This book was released on 2011-03-18 with total page 569 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fuel Cells: Technologies for Fuel Processing provides an overview of the most important aspects of fuel reforming to the generally interested reader, researcher, technologist, teacher, student, or engineer. The topics covered include all aspects of fuel reforming: fundamental chemistry, different modes of reforming, catalysts, catalyst deactivation, fuel desulfurization, reaction engineering, novel reforming concepts, thermodynamics, heat and mass transfer issues, system design, and recent research and development. While no attempt is made to describe the fuel cell itself, there is sufficient description of the fuel cell to show how it affects the fuel reformer. By focusing on the fundamentals, this book aims to be a source of information now and in the future. By avoiding time-sensitive information/analysis (e.g., economics) it serves as a single source of information for scientists and engineers in fuel processing technology. The material is presented in such a way that this book will serve as a reference for graduate level courses, fuel cell developers, and fuel cell researchers. Chapters written by experts in each area Extensive bibliography supporting each chapter Detailed index Up-to-date diagrams and full colour illustrations
Download or read book Development of Ni based Catalysts for Methane Dry Reforming Application written by Abdulkader Albarazi and published by . This book was released on 2013 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dry Reforming of Methane on Promoted LA MG and RH NI Based Catalyst Supported on Commercial Silica written by Ali khansa and published by . This book was released on 2014 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New and Future Developments in Catalysis written by Steven L Suib and published by Newnes. This book was released on 2013-07-11 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: New and Future Developments in Catalysis is a package of books that compile the latest ideas concerning alternate and renewable energy sources and the role that catalysis plays in converting new renewable feedstock into biofuels and biochemicals. Both homogeneous and heterogeneous catalysts and catalytic processes will be discussed in a unified and comprehensive approach. There will be extensive cross-referencing within all volumes.This volume presents a complete picture of all carbon dioxide (CO2) sources, outlines the environmental concerns regarding CO2, and critically reviews all current CO2 activation processes. Furthermore, the volume discusses all future developments and gives a critical economic analysis of the various processes. Offers in-depth coverage of all catalytic topics of current interest and outlines future challenges and research areas A clear and visual description of all parameters and conditions, enabling the reader to draw conclusions for a particular case Outlines the catalytic processes applicable to energy generation and design of green processes
Download or read book HIGHLY EFFICIENT AND STABLE NI BASED CATALYSTS FOR DRY REFORMING OF METHANE written by and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : The development of highly efficient and stable catalysts for dry reforming of methane (DRM) and the revealing of catalyst structural evolution during DRM process are necessary. In this dissertation, the research work was focused on (1) DRM performance enhancement of NiO/MgO solid solution by tuning the crystal particle size of MgO, (2) the effect of NiO/MgO solid solution formation on DRM performance, (3) the structural evolution of NiO/MgO catalyst under long-term DRM operation, and (4) the stabilization of Ni/Al2O3 catalyst by a NiAl2O4 isolation layer for DRM. First, the crystal particle size of MgO was tuned by ball-milling and then exploited to prepare NiO/MgO solid solution catalysts. It was revealed that the catalytic activity of NiO/MgO solid solution catalyst for DRM could be promoted by decreasing MgO crystal size. The structures of NiO/MgO catalysts were correlated with their catalytic performance (Chapter 3). The formation effects of the solid solution catalysts were revealed, including the generation of abundant mesopores, the promotion of CO2 absorption, and the limitation of CO adsorption. Consequently, the solid solution catalysts exhibited the excellent catalytic activity and stability for DRM (Chapter 4). The structural evolution of the NiO/MgO solid solution catalyst was examined with long duration test of DRM. It was demonstrated that Ni nanoparticles (NPs) of the catalyst grow from 5 to 36 nm after the operation for 1500 hours, which was resulted from the Ni exsolution induced by the reactant gas, while no coking was formed on the xxii catalyst. The unique bonds between metallic Ni and Mg were firstly found to play an important role in the superior performance of the catalyst (Chapter 5). It was found that a NiAl2O4 spinel isolation layer could be generated when the Ni/Al2O3 catalyst was treated under a repeated reduction-reaction process. The isolation layer can prevent active Ni sites from the contact to Al2O3 surface, thus enhancing the stability of the catalyst (Chapter 6).
Download or read book Plasma Catalysis written by Annemie Bogaerts and published by MDPI. This book was released on 2019-04-02 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasma catalysis is gaining increasing interest for various gas conversion applications, such as CO2 conversion into value-added chemicals and fuels, N2 fixation for the synthesis of NH3 or NOx, methane conversion into higher hydrocarbons or oxygenates. It is also widely used for air pollution control (e.g., VOC remediation). Plasma catalysis allows thermodynamically difficult reactions to proceed at ambient pressure and temperature, due to activation of the gas molecules by energetic electrons created in the plasma. However, plasma is very reactive but not selective, and thus a catalyst is needed to improve the selectivity. In spite of the growing interest in plasma catalysis, the underlying mechanisms of the (possible) synergy between plasma and catalyst are not yet fully understood. Indeed, plasma catalysis is quite complicated, as the plasma will affect the catalyst and vice versa. Moreover, due to the reactive plasma environment, the most suitable catalysts will probably be different from thermal catalysts. More research is needed to better understand the plasma–catalyst interactions, in order to further improve the applications.
Download or read book Engineering Solutions for CO2 Conversion written by Tomas Ramirez Reina and published by John Wiley & Sons. This book was released on 2021-07-19 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive guide that offers a review of the current technologies that tackle CO2 emissions The race to reduce CO2 emissions continues to be an urgent global challenge. "Engineering Solutions for CO2 Conversion" offers a thorough guide to the most current technologies designed to mitigate CO2 emissions ranging from CO2 capture to CO2 utilization approaches. With contributions from an international panel representing a wide range of expertise, this book contains a multidisciplinary toolkit that covers the myriad aspects of CO2 conversion strategies. Comprehensive in scope, it explores the chemical, physical, engineering and economical facets of CO2 conversion. "Engineering Solutions for CO2 Conversion" explores a broad range of topics including linking CFD and process simulations, membranes technologies for efficient CO2 capture-conversion, biogas sweetening technologies, plasma-assisted conversion of CO2, and much more. This important resource: * Addresses a pressing concern of global environmental damage, caused by the greenhouse gases emissions from fossil fuels * Contains a review of the most current developments on the various aspects of CO2 capture and utilization strategies * Incldues information on chemical, physical, engineering and economical facets of CO2 capture and utilization * Offers in-depth insight into materials design, processing characterization, and computer modeling with respect to CO2 capture and conversion Written for catalytic chemists, electrochemists, process engineers, chemical engineers, chemists in industry, photochemists, environmental chemists, theoretical chemists, environmental officers, "Engineering Solutions for CO2 Conversion" provides the most current and expert information on the many aspects and challenges of CO2 conversion.
Download or read book Environmental Catalysis written by F J J G Janssen and published by World Scientific. This book was released on 1999-04-14 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together highlights of a theme which is growing in interest: the creation of a sustainable society using catalysis as the main tool. Catalysts play key roles in the production of clean fuels, the conversion of waste and green raw materials into energy, clean combustion engines including control of NOx and soot production and reduction of greenhouse gases, production of clean water and of polymers, as well as reduction from polymers to monomers. Catalysts are also of prime importance in the developing H2 and syngas production technology, aimed at producing clean fuels for the coming decades. And catalysts can be recycled.
Download or read book Catalysts for Syngas Production written by Javier Ereña Loizaga and published by MDPI. This book was released on 2020-12-10 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Special Issue on “Catalysts for Syngas Production”, included in the Catalysts open access journal, shows new research about the development of catalysts and catalytic routes for syngas production, and the optimization of the reaction conditions for the process. This issue includes ten articles about the different innovative processes for syngas production. Synthesis gas (or syngas) is a mixture of hydrogen and carbon monoxide, with different chemical composition and H2/CO molar ratios, depending on the feedstock and production technology used. Syngas may be obtained from alternative sources to oil, such as natural gas, coal, biomass, organic wastes, etc. Syngas is a very good intermediate for the production of high value compounds at the industrial scale, such as hydrogen, methanol, liquid fuels, and a wide range of chemicals. Accordingly, efforts should be made on the co-feeding of CO2 with syngas, as an alternative for reducing greenhouse gas emissions. In addition, more syngas will be required in the near future, in order to satisfy the demand for synfuels and high value chemicals.
Download or read book Hydrogen Production from Carbon Dioxide Reforming of Methane Using Ni KH Catalysts written by Sanicha Tosiri and published by . This book was released on 2006 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modified Nickel Catalysts for Carbon Free Carbon Dioxide Reforming of Methane to Synthesis Gas written by Thomas Suhartanto and published by . This book was released on 1999 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preparation and Evaluation of Sol gel Made Nickel Catalysts for Carbon Dioxide Reforming of Methane written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Sol-gel (solution-gelation) method was used to prepare Ni-Ti and Ni-Ti-Al catalysts for reforming of methane with carbon dioxide. This method, after optimizing the parameters such as hydrolysis and acid/alkoxide ratio, is able to make a Ni-Ti catalyst with a surface area as high as 426m2/g when calcined at 473K; but calcination at higher temperature lead to dramatic decrease in surface area. XRD, XPS, TEM and SEM were used to understand this change. Using a packed bed reactor, the catalysts were evaluated with the reforming reaction. It was found that the activity of the Ni-Ti catalyst increases with the Ni loading in the range of 1-10wt%. The reduction temperature has strong effect on activity of the reduced catalyst. Up to 973K, the activity increases with the reduction temperature; but after 973K, the activity decreases and become 0 when the temperature is over 1023K. The Ni-Ti catalyst also deactivated as 15% after 4h of time on stream. The XRD analysis shows that Ti3O5 formed in the catalyst after higher-temperature reduction as well as after the reaction for a period of time. The formation of Ti3O5 may render the catalyst to loss its activity. However, further study is expected to understand the mechanism. TG/DTA analysis shows that both Ni-Ti and Ni-Ti-Al catalysts had carbon deposition; but the latter maintained higher activity in a longer period of time.
