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Process For Preparing Zinc Oxide Based Sorbents
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Book Synopsis Process for Preparing Zinc Oxide-based Sorbents by :
Download or read book Process for Preparing Zinc Oxide-based Sorbents written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The disclosure relates to zinc oxide-based sorbents, and processes for preparing and using them. The sorbents are preferably used to remove one or more reduced sulfur species from gas streams. The sorbents comprise an active zinc component, optionally in combination with one or more promoter components and/or one or more substantially inert components. The active zinc component is a two phase material, consisting essentially of a zinc oxide (ZnO) phase and a zinc aluminate (ZnAl.sub. 2O.sub. 4) phase. Each of the two phases is characterized by a relatively small crystallite size of typically less than about 500 Angstroms. Preferably the sorbents are prepared by converting a precursor mixture, comprising a precipitated zinc oxide precursor and a precipitated aluminum oxide precursor, to the two-phase, active zinc oxide containing component.
Book Synopsis Zinc-oxide-based Sorbents and Processes for Preparing and Using Same by :
Download or read book Zinc-oxide-based Sorbents and Processes for Preparing and Using Same written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Zinc oxide-based sorbents, and processes for preparing and using them are provided. The sorbents are preferably used to remove one or more reduced sulfur species from gas streams. The sorbents comprise an active zinc component, optionally in combination with one or more promoter components and/or one or more substantially inert components. The active zinc component is a two phase material, consisting essentially of a zinc oxide (ZnO) phase and a zinc aluminate (ZnAl.sub. 2O.sub. 4) phase. Each of the two phases is characterized by a relatively small crystallite size of typically less than about 500 Angstroms. Preferably the sorbents are prepared by converting a precursor mixture, comprising a precipitated zinc oxide precursor and a precipitated aluminum oxide precursor, to the two-phase, active zinc oxide containing component.
Book Synopsis Fuel Cells: Technologies for Fuel Processing by : Dushyant Shekhawat
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
Book Synopsis Highly Attrition Resistant Zinc Oxide-Based Sorbents for H2S Removal by Spray Drying Technique by :
Download or read book Highly Attrition Resistant Zinc Oxide-Based Sorbents for H2S Removal by Spray Drying Technique written by and published by . This book was released on 2002 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Primary issues for the fluidized-bed/transport reactor process are high attrition resistant sorbent, its high sorption capacity and regenerability, durability, and cost. The overall objective of this project is the development of a superior attrition resistant zinc oxide-based sorbent for hot gas cleanup in integrated coal gasification combined cycle (IGCC). Sorbents applicable to a fluidized-bed hot gas desulfurization process must have a high attrition resistance to withstand the fast solid circulation between a desulfurizer and a regenerator, fast kinetic reactions, and high sulfur sorption capacity. The oxidative regeneration of zinc-based sorbent usually initiated at greater than 600 C with highly exothermic nature causing deactivation of sorbent as well as complication of sulfidation process by side reaction. Focusing on solving the sorbent attrition and regenerability of zinc oxide-based sorbent, we have adapted multi-binder matrices and direct incorporation of regeneration promoter. The sorbent forming was done with a spray drying technique that is easily scalable to commercial quantity.
Book Synopsis A Low Cost, Long Life Zinc Oxide Based Sorbent by : Robert J. Copeland
Download or read book A Low Cost, Long Life Zinc Oxide Based Sorbent written by Robert J. Copeland and published by . This book was released on 1996 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Regenerating a Long-Life Zinc Oxide-Based Sorbent for Moving Bed Reactors by : Robert J. Copeland
Download or read book Regenerating a Long-Life Zinc Oxide-Based Sorbent for Moving Bed Reactors written by Robert J. Copeland and published by . This book was released on 1998 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the 4th International Conference on Separations Science and Technology by : Zhangfa Tong
Download or read book Proceedings of the 4th International Conference on Separations Science and Technology written by Zhangfa Tong and published by World Scientific. This book was released on 2004 with total page 1062 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest achievements of separation science and technology. It highlights the application of separation with regard to problems of current interest, such as the protection of the environment and the development of emerging technology, including chemical engineering, biotechnology, renewable energy sources and recycling of materials.
Book Synopsis Synthesis of Zinc Oxide by Sol–Gel Method for Photoelectrochemical Cells by : Siti Salwa Alias
Download or read book Synthesis of Zinc Oxide by Sol–Gel Method for Photoelectrochemical Cells written by Siti Salwa Alias and published by Springer Science & Business Media. This book was released on 2013-11-20 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the study of synthesized ZnO powder using Zn(CH3COO)2∙2H2O precursor, methanol (as solvent), and sodium hydroxide (NaOH) to vary the pH. The successfully synthesized ZnO powder from the sol-gel centrifugation and sol-gel storage methods were characterized and investigated by X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, Fourier-transform infrared spectroscopy, UV–visible spectroscopy, and photoluminescence test to compare the properties of the nanoparticles. The best characteristic of the ZnO powder from both methods was observed when the powders were coated on an ITO glass to fabricate a PEC. The current density–voltage performances of both PECs were investigated under luminescent and dark conditions.
Book Synopsis Final Technical Report by : Illinois Clean Coal Institute
Download or read book Final Technical Report written by Illinois Clean Coal Institute and published by . This book was released on 2002 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dry Syngas Purification Processes for Coal Gasification Systems by : Makoto Kobayashi
Download or read book Dry Syngas Purification Processes for Coal Gasification Systems written by Makoto Kobayashi and published by Elsevier. This book was released on 2020-10-18 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dry Syngas Purification Processes for Coal Gasification Systems illustrates the promising development status of dry syngas purification for various power generation systems based on coal gasification. The core advantages of dry syngas purification, methodologies for impurity measurement, sorbents development, and evaluation of process performance are described in-depth, and from a practical perspective that is based on current research and development. Reviewing key findings from process integration, the book encompasses scale-up strategies from pilot processes to achieve dry syngas processing for new build plants. The book provides researchers and engineers with practical information to realize dry syngas purification processes for each context. - Delivers pathways to realize dry syngas purification processes customized to specific power plant contexts - Provides analytical tools to facilitate plant operators in examining and interpreting the relevant impurities of coal gasification and gas treatment processes - Illustrates rational strategies for developing capable and durable dry removal sorbent for syngas impurities - Describes process design and integration through key engineering evaluation - Describes scale-up strategies of dry syngas processing for their deployment in new plants - Provides prospects on the development of future coal energy conversion system adopting dry syngas purification processes
Book Synopsis Adsorption: Fundamental Processes and Applications by : Mehrorang Ghaedi
Download or read book Adsorption: Fundamental Processes and Applications written by Mehrorang Ghaedi and published by Academic Press. This book was released on 2021-03-19 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adsorption: Fundamental Processes and Applications, Volume 33 in the Interface Science and Technology Series, discusses the great technological importance of adsorption and describes how adsorbents are used on a large scale as desiccants, catalysts, catalyst supports, in the separation of gases, the purification of liquids, pollution control, and in respiratory protection. Finally, it explores how adsorption phenomena play a vital role in many solid-state reactions and biological mechanisms, as well as stressing the importance of the widespread use of adsorption techniques in the characterization of surface properties and the texture of fine powders. - Covers the fundamental aspects of adsorption process engineering - Reviews the environmental impact of key aquatic pollutants - Discusses and analyzes the importance of adsorption processes for water treatment - Highlights opportunity areas for adsorption process intensification - Edited by a world-leading researcher in interface science
Book Synopsis Official Gazette of the United States Patent and Trademark Office by : United States. Patent and Trademark Office
Download or read book Official Gazette of the United States Patent and Trademark Office written by United States. Patent and Trademark Office and published by . This book was released on 2002 with total page 1398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sorbents Materials for Controlling Environmental Pollution by : Avelino Nunez-Delgado
Download or read book Sorbents Materials for Controlling Environmental Pollution written by Avelino Nunez-Delgado and published by Elsevier. This book was released on 2021-02-16 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sorbents Materials for Controlling Environmental Pollution: Current State and Trends presents data on current use and future trends regarding sorbent materials employed against soil, water, and air pollution. The book is organized first by use and research for a variety of geographic areas. It will then focus on different sorbent materials and their uses, followed by various pollutants and their management. Including updated and extensive data from an assortment of sources, the book is organized to be very accessible, including with an interactive table to help identify the results of appropriate sorbents for each environmental compartment. The growing concern regarding soil, water and air pollution all over the world has implications for climate change and sustainability, making Sorbents Materials for Controlling Environmental Pollution: Current State and Trends an important reference for environmental scientists to identify tools for moving forward in solving these problems. - Includes data and examples from various geographic locations worldwide - Synthesizes data for a variety of sorbent material from different sources - Presents data for various kinds of pollutants across environmental spheres, including soil, water, and air - Utilizes an interactive table for quicker access to data and results
Download or read book Zinc Titanate Sorbents written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The present invention provides a zinc titanate sorbent material useful in desulfurization applications. The zinc titanate material is in the form of generally spherical particles of substantially uniform chemical distribution. The sorbent material is capable of absorbing sulfur compounds from a gaseous feed in an amount of at least about 15 weight percent based on the weight of the sorbent. The sorbent material is prepared by a process including: (a) forming a zinc oxide/titanium dioxide dry blend, (b) preparing a substantially uniform aqueous slurry comprising the zinc oxide/titanium dioxide dry blend, organic binder, and at least about 1 weight percent inorganic binder based on the solids weight of the slurry, (c) spray drying the slurry to produce substantially spherical particles, and (d) calcining the particles at a temperature of between about 750.degree. C. to about 950.degree. C. The dry blend is formed by mixing between about 0.5 to about 2 parts zinc oxide having a median particle size of less than about 0.5 .mu., and about 1 part titanium dioxide having a median particle size of less than about 1 .mu. The slurry contains substantially no free silica and may be prepared by the process including (1) preparing an aqueous solution of organic binder, (2) adding the dry blend to the aqueous solution of organic binder, and (3) adding the inorganic binder to the solution of organic binder, and blend. Additional reagents, such as a surfactant, may also be incorporated into the sorbent material. The present invention also provides a process for desulfurizing a gaseous stream. The process includes passing a gaseous stream through a reactor containing an attrition resistant zinc titanate sorbent material of the present invention.
Book Synopsis Zinc Oxide by : Dalton Boyles Faloon
Download or read book Zinc Oxide written by Dalton Boyles Faloon and published by . This book was released on 1925 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Zinc Oxide Rediscovered by : New Jersey Zinc Company
Download or read book Zinc Oxide Rediscovered written by New Jersey Zinc Company and published by . This book was released on 1957 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nanoparticles’ Preparation, Properties, Interactions and Self-Organization by : Richard Dvorsky
Download or read book Nanoparticles’ Preparation, Properties, Interactions and Self-Organization written by Richard Dvorsky and published by Springer Nature. This book was released on 2021-11-04 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book defines the concept of nanoparticles from the point of view of statistical physics and quantum physics. It gives an overview of their basic properties and of the basic methods of their preparation. The chapters are devoted to the problems of interactions between nanoparticles from elementary van der Waals interaction to Lifchitz macroscopic theory and Hamaker microscopic summation method. It elucidates the process of self-organization of nanoparticles released from the frozen liquid dispersion at the sublimation interface and mathematical simulations of the corresponding processes. It also presents applications of a completely new controlled sublimation technology.