Download or read book Dry Reforming of Methane on Nickel Dispersed on Mesoporous Silica written by Joudie Youssef and published by . This book was released on 2015 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reduction of greenhouse gases utilization and emission is the main interest of the scientists all over the world. Dry reforming of methane (DRM) is gaining more attention, due to its consumption of two greenhouse gases, namely methane and carbon dioxide, and its production of syngas. Moreover, the products ratio (1:1) of H2: CO is suitable for Fishcher-Tropsch synthesis. DRM is highly endothermic and requires severe conditions to proceed thermodynamically. Thus, the main challenge is the design a catalyst that can maintain its activity and stability under the reaction conditions. Noble metals have showed great catalytic activity and stability when used as an active phase in DRM catalysts. However, their use is not favored to economic an accessibility reasons. Nickel-based catalysts are an affordable and available promising alternative for noble metals. Thus, Nickel was used as an active phase in this study. The mesoporous based silica support, Santa-Barbara Amorphous material (SBA-15), used as catalytic supports in DRM, provide good dispersion of the active phase and good prevention to sintering. Thus SBA-15 is chosen as a support for Nickel in this study. The main focus of this thesis is to study the effect of the modifications made during SBA-15 synthesis (acidity, stirring rate, hydrothermal treatment, etc) on the activity/stability performance of Ni-based catalyst. In this study, eight supports SBA-15(x) were prepared and characterized by N2 sorption and showed different textural properties. Then, all the samples were impregnated with 5wt % Nickel using the two solvent impregnation method. Finally, eight catalysts Ni5/SBA-15(x) are obtained. The calcined fresh samples are characterized by N2 sorption, TPR, TEM, SEM and XRD. The results suggest similar SBA-15 structures with a small difference in grains shape .In addition, differences in Nickel particles size and localization are observed. A good dispersion of the Nickel particles is noted for all the catalysts. Catalytic activities are measured with a GHSV of 3600mL.g-1.h-1 at temperatures ranging from 200 to 800°C and atmospheric pressure. Stability measurements are conducted with the same GHSV at a fixed temperature of 650°C for 12 hours. The catalysts showed high activity and selectivity toward DRM. No significant deactivation is observed throughout the stability test.The characterizations by SEM and XRD after the test indicate that no sintering took place. The main cause of the small deactivation is due to coke deposition. Further studies of the spent catalysts by TEM are required to determine the type of coke deposited.
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 Hydrogen Production and Energy Transition written by Marcel Van de Voorde and published by Walter de Gruyter GmbH & Co KG. This book was released on 2021-09-07 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon neutral hydrogen technologies play a key role in preventing climate change. Maximizing production of hydrogen in a clean and efficient manner is critical to the hydrogen economy. This book describes most of the potential hydrogen processing technologies and presents the state-of the- art and future developments of modern hydrogen technologies. Attention has been given to the theoretical aspects, thermodynamics, process calculations, and modeling approaches, new technologies and reports of multiple successful new pilot systems. The book should appeal to a brad readership and ideal for students of materials science, chemistry, physics; for researchers, chemical- and mechanical engineering, for industrialists, policymakers, economics, safety agencies and governments.
Download or read book Heterogeneous Catalysis written by Moises Romolos Cesario and published by Elsevier. This book was released on 2022-04-27 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heterogeneous Catalysis: Materials and Applications focuses on heterogeneous catalysis applied to the elimination of atmospheric pollutants as an alternative solution for producing clean energy and the valorization of chemical products. The book helps users understand the properties of catalytic materials and catalysis phenomena governing electrocatalytic/catalytic reactions, and – more specifically – the study of surface and interface chemistry. By clustering knowledge in these fields, the book makes information available to both the academic and industrial communities. Further, it shows how heterogeneous catalysis applications can be used to solve environmental problems and convert energy through electrocatalytic reactions and chemical valorization. Sections cover nanomaterials for heterogeneous catalysis, heterogeneous catalysis mechanisms, SOX adsorption, greenhouse gases conversion, reforming reactions for hydrogen production, valorization of hydrogen energy, energy conversion and biomass valorization. Addresses topics of increasing interest to society such as the valorization of biomass, the use of polluting gases to produce value-added products, and the optimization of catalytic materials for water splitting, fuel cells, and other devices Discusses pollutant adsorption by industrial fume desulphurization processes Helps improve processes for obtaining chemicals using nonconventional technologies
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.
Download or read book Membrane Reactors for Energy Applications and Basic Chemical Production written by Angelo Basile and published by Elsevier. This book was released on 2015-02-05 with total page 697 pages. Available in PDF, EPUB and Kindle. Book excerpt: Membrane Reactors for Energy Applications and Basic Chemical Production presents a discussion of the increasing interest in membrane reactors that has emerged in recent years from both the scientific and industrial communities, in particular their usage for energy applications and basic chemical production. Part One of the text investigates membrane reactors for syngas and hydrogen production, while Part Two examines membrane reactors for other energy applications, including biodiesel and bioethanol production. The final section of the book reviews the use of membrane reactors in basic chemical production, including discussions of the use of MRs in ammonia production and the dehydrogenation of alkanes to alkenes. Provides comprehensive coverage of membrane reactors as presented by a world-renowned team of experts Includes discussions of the use of membrane reactors in ammonia production and the dehydrogenation of alkanes to alkenes Tackles the use of membrane reactors in syngas, hydrogen, and basic chemical production Keen focus placed on the industry, particularly in the use of membrane reactor technologies in energy
Download or read book Kinetic Studies on the Dry Reforming of Methane Applying Heterogeneous Nickel Catalysts with Controlled Metal Dispersion and Active Supports written by Lukas Tillmann and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nanomaterials for Environmental Purification and Energy Conversion written by Ewa Kowalska and published by MDPI. This book was released on 2020-02-06 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Special Issue, “Nanomaterials for Environmental Purification and Energy Conversion”, describes the significant and increasing role of nanomaterials in catalysis. It is believed that the most important factor for future human development could be to use nanomaterials (nanotechnology) to solve such critical issues facing humanity such as environment, water and energy. It should be also pointed out that properties of nanomaterials differ substantially from that of bulk materials of the same composition, resulting in high reactivity. Therefore, it creates new perspectives for the catalytic processes in the broad sense. This issue was mainly dedicated as a platform for the contributions from The Symposium on Nanomaterials for Environmental Purification and Energy Conversion (SNEPEC), which was held in Sapporo, Japan in winter 2018. Accordingly, this book compiles the current state-of-the-art of research in the area of novel photocatalysts and highlights current research directions in the fields of advanced oxidation technologies, material science and nanotechnology. Written by leading experts in the field of photochemistry and chemical engineering, a collection of 17 papers, including 16 research papers and one review, covers a broad range of topics focusing on the exceptional role of catalytic nanomaterials in solving environmental and energy problems of modern societies. The majority of papers present the importance of photocatalytic nanomaterials, especially for degradation of organic pollutants and inactivation of microorganisms, but there is also a strong representation of conventional catalysis, based on nanomaterials for important processes such as catalytic hydrogen production and organic synthesis.
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 CO2 Conversion and Utilization written by Chunshan Song and published by ACS Symposium. This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the chemistry and processes for conversion and utilization of carbon dioxide. Topics include CO 2 utilization, its conversion to industrial chemicals and fuels, its coversion via synthesis gas, and new catalysts and chemical processes for conversion.
Download or read book Core Shell and Yolk Shell Nanocatalysts written by Hiromi Yamashita and published by Springer Nature. This book was released on 2021-05-15 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces recent progress in preparation and application of core-shell and yolk-shell structures for attractive design of catalyst materials. Core-shell nanostructures with active core particles covered directly with an inert shell can perform as highly active and selective catalysts with long lifetimes. Yolk-shell nanostructures consisting of catalytically active core particles encapsulated by hollow materials are an emerging class of nanomaterials. The enclosed void space is expected to be useful for encapsulation and compartmentation of guest molecules, and the outer shell acts as a physical barrier to protect the guest molecules from the surrounding environment. Furthermore, the tunability and functionality in the core and the shell regions can offer new catalytic properties, rendering them attractive platform materials for the design of heterogeneous catalysts. This book describes the recent development of such unique nanostructures to design effective catalysts which can lead to new chemical processes. It provides an excellent guide for design and application of core-shell and yolk-shell structured catalysts for a wide range of readers working on design of attractive catalysts, photocatalysts, and electrocatalysts for energy, environmental, and green chemical processes.
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 Evolution of Surface and Thin Film Microstructure Volume 280 written by Harry A. Atwater and published by Mrs Proceedings. This book was released on 1993-10-27 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt: The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners.
Download or read book Hydrogen Supply Chain written by Catherine Azzaro-Pantel and published by Academic Press. This book was released on 2018-08-18 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design, Deployment and Operation of a Hydrogen Supply Chain introduces current energy system and the challenges that may hinder the large-scale adoption of hydrogen as an energy carrier. It covers the different aspects of a methodological framework for designing a HSC, including production, storage, transportation and infrastructure. Each technology’s advantages and drawbacks are evaluated, including their technology readiness level (TRL). The multiple applications of hydrogen for energy are presented, including use in fuel cells, combustion engines, as an alternative to natural gas and power to gas. Through analysis and forecasting, the authors explore deployment scenarios, considering the dynamic aspect of HSCs. In addition, the book proposes methods and tools that can be selected for a multi-criteria optimal design, including performance drivers and economic, environmental and societal metrics. Due to its systems-based approach, this book is ideal for engineering professionals, researchers and graduate students in the field of energy systems, energy supply and management, process systems and even policymakers. Explores the key drivers of hydrogen supply chain design and performance evaluation, including production and storage facilities, transportation, information, sourcing, pricing and sustainability Presents multi-criteria tools for the optimization of hydrogen supply chains and their integration in the overall energy system Examines the available technology, their strengths and weaknesses, and their technology readiness levels (TRL), to draw future perspectives of hydrogen markets and propose deployment scenarios Includes international case studies of hydrogen supply chains at various scales
Download or read book Catalyst Preparation written by John Regalbuto and published by CRC Press. This book was released on 2016-04-19 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text explores the optimization of catalytic materials through traditional and novel methods of catalyst preparation, characterization, and monitoring for oxides, supported metals, zeolites, and heteropolyacids. It focuses on the synthesis of bulk materials and of heterogeneous materials, particularly at the nanoscale. The final chapters examine pretreatment, drying, finishing effects, and future applications involving catalyst preparation and the technological advances necessary for continued progress. Topics also include heat and mass transfer limitations, computation methods for predicting properties, and catalyst monitoring on laboratory and industrial scales.
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 Heterogeneous Catalysis for Sustainable Energy written by Landong Li and published by John Wiley & Sons. This book was released on 2022-05-03 with total page 755 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heterogeneous Catalysis for Sustainable Energy Explore the state-of-the-art in heterogeneous catalysis In Heterogeneous Catalysis for Sustainable Energy, a team of distinguished researchers delivers a comprehensive and cutting-edge treatment of recent advancements in energy-related catalytic reactions and processes in the field of heterogeneous catalysis. The book includes extensive coverage of the hydrogen economy, methane activation, methanol-to-hydrocarbons, carbon dioxide conversion, and biomass conversion. The authors explore different aspects of the technology, like reaction mechanisms, catalyst synthesis, and the commercial status of the reactions. The book also includes: A thorough introduction to the hydrogen economy, including hydrogen production, the reforming of oxygen-containing chemicals, and advances in Fischer-Tropsch Synthesis Comprehensive explorations of methane activation, including steam and dry reforming of methane and methane activation over zeolite catalysts Practical discussions of alkane activation, including cracking of hydrocarbons to light olefins and catalytic dehydrogenation of light alkanes In-depth examinations of zeolite catalysis and carbon dioxide as C1 building block Perfect for catalytic, physical, and surface chemists, Heterogeneous Catalysis for Sustainable Energy also belongs in the libraries of materials scientists with an interest in energy-related reactions and processes in the field of heterogeneous catalysis.
