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Experimental And Modeling Studies For Hydrogen And Filamentous Carbon Production From Methane Cracking Using A Ni Based Catalyst
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Book Synopsis Experimental and Modeling Studies for Hydrogen and Filamentous Carbon Production from Methane Cracking Using a Ni Based Catalyst by : Mohadeb Chandra Hazra
Download or read book Experimental and Modeling Studies for Hydrogen and Filamentous Carbon Production from Methane Cracking Using a Ni Based Catalyst written by Mohadeb Chandra Hazra and published by . This book was released on 2005 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modelling and Experimental Study of Methane Catalytic Cracking as a Hydrogen Production Technology by : Ashraf Mukhtar Lotfi Amin
Download or read book Modelling and Experimental Study of Methane Catalytic Cracking as a Hydrogen Production Technology written by Ashraf Mukhtar Lotfi Amin and published by . This book was released on 2011 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: Production of hydrogen is primarily achieved via catalytic steam reforming, partial oxidation, and auto-thermal reforming of natural gas. Although these processes are mature technologies, they are somewhat complex and CO is formed as a by-product, therefore requiring a separation process if a pure or hydrogen-rich stream is needed. As an alternative method, supported metal catalysts can be used to catalytically decompose hydrocarbons to produce hydrogen. The process is known as catalytic cracking of hydrocarbons. Methane, the hydrocarbon containing the highest percentage of hydrogen, can be used in such a process to produce a hydrogen-rich stream. The decomposition of methane occurs on the surface of the active metal to produce hydrogen and filamentous carbon. As a result, only hydrogen is produced as a gaseous product, which eliminates the need of further separation processes to separate CO2 or CO. Nickel is commonly used in research as a catalyst for methane cracking in the 500-700C temperature range. To conduct methane catalytic cracking in a continuous manner, regeneration of the deactivated catalyst is required and circulation of the catalysts between cracking and regeneration cycles must be achieved. Different reactor designs have been successfully used in cyclic operation, such as a set of parallel fixed-bed reactors alternating between cracking and regeneration, but catalyst agglomeration due to carbon deposition may lead to blockage of the reactor and elevated pressure drop through the fixed bed. Also poor heat transfer in the fixed bed may lead to elevated temperature during the regeneration step when carbon is burned in air, which may cause catalyst sintering. A fluidized bed reactor appears as a viable option for methane catalytic cracking, since it would permit cyclic operation by moving the catalyst between a cracker and a regenerator. In addition, there is the possibility of using fine catalyst particles, which improves catalyst effectiveness. The aims of this project were 1) to develop and characterize a suitable nickel-based catalyst and 2) to develop a model for thermal catalytic decomposition of methane in a fluidized bed.
Download or read book Master's Theses Directories written by and published by . This book was released on 2005 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Education, arts and social sciences, natural and technical sciences in the United States and Canada".
Book Synopsis Production of Fine Carbon Nanoparticles and Hydrogen-rich Gas from Laser-thermal Cracking of Methane Using Regenerable Iron Based Catalyst by : Shenghong Qiu
Download or read book Production of Fine Carbon Nanoparticles and Hydrogen-rich Gas from Laser-thermal Cracking of Methane Using Regenerable Iron Based Catalyst written by Shenghong Qiu and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes, having remarkable material properties, hold tremendous potential applications. Among the synthesis methods, cracking of natural gas (methane) is one of the effective ways, which also produces hydrogen without any CO2 emission. The reaction energy in conventional methods is usually supplied by burning some feedstock, which results in low thermal efficiency. A new approach, direct laser irradiation, will give an environmentally clean and efficient process to produce carbon nanoparticles. Some exploratory studies on catalytic laser-thermal cracking of methane were carried out at UTSI. Regenerable iron-based (Fe/Al2O3) catalyst made by soaking-drying technique was employed for the cracking reaction of methane. TGA and electric furnace set-up were also used to evaluate the catalyst. A TEA CO2-laser was employed as a heat source in the laser-based experiments, where different reactor modes, like fluidized- bed, basket and fixed bed reactor, were tried. The experiments on catalyst regeneration were also carried out. Three cycles of cracking/regenerations were tried. The black carbon in final catalyst residues was examined by optical microscope, SEM and X-ray diffraction analyses. It was shown that the laser-based cracking approach could eventually be utilized for the production of carbon nanoparticles and hydrogen-rich gas. However, more additional experiments are needed to find optimal conditions and reactor configurations for cracking reaction and production of carbon nanoparticles.
Book Synopsis Production of Hydrogen from Renewable Resources by : Zhen Fang
Download or read book Production of Hydrogen from Renewable Resources written by Zhen Fang and published by Springer. This book was released on 2015-11-06 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides state-of-the-art reviews, current research and prospects of producing hydrogen using bio, thermal and electrochemical methods and covers hydrogen separation, storage and applications. Hydrogen produced from biomass offers a clean and renewable energy source and a promising energy carrier that will supplement or replace fossil fuels in the future. The book is intended as a reference work for researchers, academics and industrialists working in the chemical and biological sciences, engineering, renewable resources and sustainability. Readers will find a wealth of information in the text that is both useful for the practical development of hydrogen systems and essential for assessing hydrogen production by bioelectrochemical, electrochemical, fermentation, gasification, pyrolysis and solar means, applied to many forms of biomass. Dr. Zhen Fang is Professor in Bioenergy, Leader and founder of biomass group, Chinese Academy of Sciences, Xishuangbanna Tropical Botanical Garden and is also adjunct Professor of Life Sciences, University of Science and Technology of China. Dr. Richard L Smith, Jr. is Professor of Chemical Engineering, Graduate School of Environmental Studies, Research Center of Supercritical Fluid Technology, Tohoku University, Japan. Dr. Xinhua Qi is Professor of Environmental Science, Nankai University, China.
Book Synopsis Hydrogen Production from Nonrenewable Resources by : Mohammad Reza Rahimpour
Download or read book Hydrogen Production from Nonrenewable Resources written by Mohammad Reza Rahimpour and published by CRC Press. This book was released on 2024-11-08 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: The conventional generation of a substantial quantity of hydrogen from resources based on fossil fuels continues to play an essential role in the hydrogen economy. Hydrogen Production from Nonrenewable Resources offers a comprehensive overview and features three sections covering properties and characteristics of hydrogen, technologies for converting nonrenewable sources to hydrogen, and challenges in synthesis and production. Details of thermophysical characteristics and properties of hydrogen Covers conventional and novel industrial technologies for efficient production Explores environmental opportunities and challenges and health and safety regulations Provides techno‐economic and lifecycle assessments with future outlooks Part of the multivolume Handbook of Hydrogen Production and Applications, this standalone book guides researchers and academics in chemical, environmental, energy, and related areas of engineering interested in the development and implementation of hydrogen production technologies.
Book Synopsis Kinetics of Catalytic Reactions by : M. Albert Vannice
Download or read book Kinetics of Catalytic Reactions written by M. Albert Vannice and published by Springer Science & Business Media. This book was released on 2006-04-09 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes how to conduct kinetic experiments with heterogeneous catalysts, analyze and model the results, and characterize the catalysts Detailed analysis of mass transfer in liquid phase reactions involving porous catalysts. Important to the fine chemicals and pharmaceutical industries so it has appeal to many researchers in both industry and academia (chemical engineering and chemistry departments
Book Synopsis Infrared and Raman Spectroscopy by : Peter Larkin
Download or read book Infrared and Raman Spectroscopy written by Peter Larkin and published by Elsevier. This book was released on 2017-11-13 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Infrared and Raman Spectroscopy, Principles and Spectral Interpretation, Second Edition provides a solid introduction to vibrational spectroscopy with an emphasis on developing critical interpretation skills. This book fully integrates the use of both IR and Raman spectroscopy as spectral interpretation tools, enabling the user to utilize the strength of both techniques while also recognizing their weaknesses. This second edition more than doubles the amount of interpreted IR and Raman spectra standards and spectral unknowns. The chapter on characteristic group frequencies is expanded to include increased discussions of sulphur and phosphorus organics, aromatic and heteroaromatics as well as inorganic compounds. New topics include a discussion of crystal lattice vibrations (low frequency/THz), confocal Raman microscopy, spatial resolution in IR and Raman microscopy, as well as criteria for selecting Raman excitation wavelengths. These additions accommodate the growing use of vibrational spectroscopy for process analytical monitoring, nanomaterial investigations, and structural and identity determinations to an increasing user base in both industry and academia. Integrates discussion of IR and Raman spectra Pairs generalized IR and Raman spectra of functional groups with tables and text Includes over 150 fully interpreted, high quality IR and Raman reference spectra Contains fifty-four unknown IR and Raman spectra, with a corresponding answer key
Book Synopsis Theoretical Investigation of Catalytic Methane Cracking and Carbon Nanotube Growth by : Jingde Li
Download or read book Theoretical Investigation of Catalytic Methane Cracking and Carbon Nanotube Growth written by Jingde Li and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experiments with a Self-generated Carbon-expanded Iron Catalyst for Synthesis of Methane by : Joseph J. Demeter
Download or read book Experiments with a Self-generated Carbon-expanded Iron Catalyst for Synthesis of Methane written by Joseph J. Demeter and published by . This book was released on 1964 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2001 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Directory of Graduate Research by : American Chemical Society. Committee on Professional Training
Download or read book Directory of Graduate Research written by American Chemical Society. Committee on Professional Training and published by . This book was released on 2005 with total page 1932 pages. Available in PDF, EPUB and Kindle. Book excerpt: Faculties, publications and doctoral theses in departments or divisions of chemistry, chemical engineering, biochemistry and pharmaceutical and/or medicinal chemistry at universities in the United States and Canada.
Book Synopsis Carbon Dioxide Reforming of Methane for Hydrogen Production on Co Catalysts and Ni-co Bimetallic Catalysts by : Waralee Marungrueang
Download or read book Carbon Dioxide Reforming of Methane for Hydrogen Production on Co Catalysts and Ni-co Bimetallic Catalysts written by Waralee Marungrueang and published by . This book was released on 2013 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: The cobalt catalysts (cobalt content by weight: 7%, 10% and 15%) and cobalt-nickel bimetallic catalysts (cobalt-nickel content by weight: 3.5%-3.5%, 5%-5%, 7%-7%, 10%-10% and 15%-15%) were studied in dry reforming of methane for hydrogen and synthesis gas production. All catalysts were synthesized by the wetness impregnation method. The dry reforming of methane was carried out at 700oC, atmosphere pressure using a mixture; CH4 and CO2 in ratio 1:1. It was found that, after 120 minutes, the catalysts that gave the best methane conversion are 10%Co/Al2O3 (61.86%) for mono-metallic catalysts and 10%Ni-10%Co/Al2O3 (96.86%) for bimetallic catalysts. Moreover, the effect of adding potassium promoter to 10%Ni-10%Co/Al2O3 catalyst was studied. The methane conversion of potassium promoted 10%Ni-10%Co/Al2O3 catalyst was slightly lower than one without potassium. However, the adding of promoter could significantly decrease the carbon content on the catalysts.
Book Synopsis Catalyst Deactivation 2001 by : J.J. Spivey
Download or read book Catalyst Deactivation 2001 written by J.J. Spivey and published by Elsevier. This book was released on 2001-09-21 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings contains the papers presented at the 9th International Symposium on Catalyst Deactivation, held in Lexington, KY, USA, on 7-10 October 2001.
Book Synopsis CO2: A Valuable Source of Carbon by : Marcello De De Falco
Download or read book CO2: A Valuable Source of Carbon written by Marcello De De Falco and published by Springer Science & Business Media. This book was released on 2013-07-30 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the annual production of carbon Dioxide (CO2) reaches 30 billion tones, the growing issue of the greenhouse effect has triggered the development of technologies for CO2 sequestration, storage and use as a reactant. Collecting together the reports of the Congress at University of Rome (Campus Bio-medico) held 16th April 2012, CO2: A Valuable Source of Carbon presents and discusses promising technologies for the industrial exploitation of CO2. Divided into two parts, the current technology is evaluated and summarized before European and national projects are presented. The focus on CO2 recovery, particularly in value-added production, proposes applicable methods to develop sustainable practices and even to mitigate greenhouse gas emission from large-scale fossil fuels usage. Including current data and real-world examples, CO2: A valuable source of carbon provides students, engineers, researchers and industry professional with up-to-date material and potential areas for development and research.
Book Synopsis Methane Steam Reforming Over Ni-based Catalysts by : Fanglin Che
Download or read book Methane Steam Reforming Over Ni-based Catalysts written by Fanglin Che and published by . This book was released on 2016 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Finally, we provide a 'bottom-up' fundamental insight into two debates regarding methane activation over Ni-based catalysts, including the role of a low concentration of carbon or carbide species and the role of electric fields in a fuel cell system. Our DFT results suggest that inducing a local change of the Ni oxidation states can markedly enhance methane activation. Overall, this thesis will be instructive for the design of heterogeneous reactors with tunable metal oxidation states via the modification of the surface carbon or the interface carbide complex as well as the addition of reaction environment factors (e.g., electric fields).
Book Synopsis Plasma Catalysis by : Annemie Bogaerts
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.
