Carbon Dioxide Reforming of Methane for Hydrogen Production on Co Catalysts and Ni-co Bimetallic Catalysts PDF Download
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Author: Waralee Marungrueang Publisher: ISBN: Category : Carbon dioxide Languages : en Pages : 160
Book Description
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.
Author: Waralee Marungrueang Publisher: ISBN: Category : Carbon dioxide Languages : en Pages : 160
Book Description
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.
Author: Moises R. Cesario Publisher: Bentham Science Publishers ISBN: 1681087588 Category : Technology & Engineering Languages : en Pages : 278
Book Description
The implementation of hydrogen production processes on an industrial scale requires a comprehensive understanding of the chemical proprieties of catalytic materials and the applications such materials in electrocatalysis. This volume presents information about catalytic materials for hydrogen production and hydrogen valorization in electro-oxidation reactions. Chapters emphasize on materials for classical steam, CO2 sorption enhanced steam reforming and dry reforming for hydrogen production. The hydrogen electro-oxidation reaction in anodes of Solid Oxide Fuel Cells (SOFCs) is also explained. Chapters have been contributed by experts in industrial chemistry, adding a valuable perspective for readers. This volume is essential to chemical engineering researchers and industrial professionals interested in hydrogen production systems and the science behind the materials driving the reactions in key processes.
Author: Supawat Pachop Publisher: ISBN: Category : Catalytic reforming Languages : en Pages : 122
Book Description
Syngas is a main product from dry reforming of methane (DRM) which is efficient reaction to convert two main greenhouse gases (CH4 and CO2) into hydrogen and carbon monoxide with H2/CO ratio equal to 1. This study investigated the bimetallic NiCo on alumina-supported catalysts prepared by sol-gel method with different metal loading (7.5%Ni7.5%Co/Al2O3 or 1Ni1Co/Al2O3, 10%Ni5%Co/Al2O3 or 2Ni1Co/Al2O3, 11.25%Ni3.75%Co/Al2O3 or 3Ni1Co/Al2O3) and compared the optimal bimetallic catalyst with monometallic Ni/Al2O3 (15wt.%) and Co/Al2O3 (15wt.%). The synthesized catalysts were characterized by X-ray diffraction (XRD), N2-physisorption, Scanning Electron Microscopy (SEM), NH3 Temperature Programmed Desorption (NH3-TPD), temperature programmed reduction (H2-TPR), Thermo gravimetric analyze (TGA), and CO-chemisorption. The catalysts were used on DRM with composition of 50:50 (vol%) feed CH4:CO2 under atmospheric pressure at 700 °C. The bimetallic catalyst 3Ni1Co/Al2O3 exhibited the highest activities with H2 selectivity of 41%, CH4 conversion of 74%, CO conversion of 79%, high metal dispersion and high specific surface area. Moreover, the 3Ni1Co had high acceptable amount of carbon deposition and can be properly used for long term.
Author: Abdul Basit Publisher: Springer Nature ISBN: 9811997683 Category : Science Languages : en Pages : 911
Book Description
This book highlights latest research advance in the field of Radioscience, Equatorial Atmospheric Science and Environment as part of the International Symposium for Equatorial Atmosphere celebrating the 21st Anniversary of the Equatorial Atmosphere Radar (EAR) , organized by Research Center for Climate and Atmosphere (PRIMA) of National Research and Innovation Agency (BRIN). The symposium provides a scientific platform for researchers and professionals to discuss ideas and current issues as well as to design the solutions in the areas of space science, ocean science, atmospheric science, , environmental science, material science, and other related disciplines.
Author: Ji Siang Tan Publisher: ISBN: Category : Catalysts Languages : en Pages : 108
Book Description
Increased concerns on anthropogenic greenhouse gas emissions have renewed interest in the CO2 (dry) reforming process as an alternative to steam reforming for synthesis gas production from natural gas. For hydrocarbon dry reforming, where the product stream H2:CO ratio is less than 3, synfuel production is more amenable and acceptable for downstream methanol and other oxygenated synthesis. However, dry reforming is highly endothermic, and suffers from carbon-induced catalyst deactivation. This thesis therefore investigates and evaluates the performance of methane dry reforming process at different operation conditions such as reaction temperature and feed composition, and the effects of loaded metals (Mo and Ni) on alumina-supported Co-based catalyst. Runs of the methane dry reforming experiment were conducted in a computer-controlled fixebed reactor at different feed compositions and reaction temperature. Both MoO3 and NiO phases were formed during wetness co-impregnation with a mixture of deionized water and alumina support as measured in X-ray diffraction. Temperature-programmed calcination showed that the transformations from MoO3 to CoMoO4 phase and NiO to NiAl2O4 phase were a 2 step process involving the formation of an oxidation intermediate form. Calcination of co-impregnated catalysts at 500 0C for 5 h appeared to be optimal preparation condition for H2 selectivity. Al2O3 support was the best support to give the highest H2 to CO ratio. Second metal promotion did not alter reaction rate significantly. However the interaction of loaded metal oxides with the surface carbonaceous species resulted in substantially reduced carbon deposition on Co-based catalyst, with Ni providing the greatest coking resistance compared to Mo. A quantitative relationship between activation energy and feed composition of CO2:CH4 ( 1:1, 2:1 and 3:1 ) as well as reaction temperatures (923 K, 953 K and 973 K) was obtained over bimetallic 5%Ni-10%Co/Al2O3 catalyst which gave the highest value of H2/CO ratio in the methane dry reforming process. Methane dry reforming activity was stable with time-on-stream for 4 h.
Author: Mohammad Reza Rahimpour Publisher: Elsevier ISBN: 0323985009 Category : Technology & Engineering Languages : en Pages : 598
Book Description
Advances in Synthesis Gas: Methods, Technologies and Applications: Syngas Production and Preparation is a collection of various chapters concerning many aspects of syngas production technologies, including common methods like gasification, steam/dry/autothermal reforming, membrane technology, etc., along with novel methods like plasma technology, micro-reactors, electrolysis processes as well as photocatalytic systems. In addition, different sources for producing syngas, including oil, crude oil, heavy oil, microalgae, black liquor, tar and bitumen, as well as municipal, agricultural, food, plastic, wood and cardboard wastes are described in detail. - Introduces syngas characteristics and its properties - Describes various methods and technologies for producing syngas - Discusses syngas production from different roots and feedstocks
Author: Inamuddin Publisher: Springer Nature ISBN: 3030728773 Category : Science Languages : en Pages : 354
Book Description
This edited book provides an in-depth overview of carbon dioxide (CO2) transformations to sustainable power technologies. It also discusses the wide scope of issues in engineering avenues, key designs, device fabrication, characterizations, various types of conversions and related topics. It includes studies focusing on the applications in catalysis, energy conversion and conversion technologies, etc. This is a unique reference guide, and one of the detailed works is on this technology. The book is the result of commitments by leading researchers from various backgrounds and expertise. The book is well structured and is an essential resource for scientists, undergraduate, postgraduate students, faculty, R&D professionals, energy chemists and industrial experts.
Author: Humbul Suleman Publisher: CRC Press ISBN: 1000537447 Category : Science Languages : en Pages : 370
Book Description
A comprehensive resource on different aspects of sustainable carbon capture technologies including recent process developments, environmentally friendly methods, and roadmaps for implementations. It discusses also the socio-economic and policy aspects of carbon capture and the challenges, opportunities, and incentives for change with a focus on industry, policy, and governmental sector. Through applications in various fields of environmental health, and four selected case studies from four different practical regimes of carbon capture, the book provides guidelines for sustainable and responsible carbon capture and addresses current and future global energy, environment, and climate concerns.
Author: Mohamed Nageeb Rashed Publisher: BoD – Books on Demand ISBN: 1789233429 Category : Science Languages : en Pages : 189
Book Description
Zeolites are hydrated aluminosilicate minerals of the family of microporous solids. According to the US Geological Survey, there are about 40 naturally occurring zeolites, forming in sedimentary and volcanic rocks. The most commonly mined forms include clinoptilolite, chabazite and mordenite. There are over 200 synthetic zeolites. For their abundance, natural and synthetic zeolites are widely used in the industry, agriculture, water treatment, wastewater treatment and as dietary supplements to treat diarrhea, autism, cancer and other. This book Zeolites and Their Applications deals with several aspects of zeolite morphology, synthesis and applications. The book is divided into three sections and structured into nine chapters. The first section includes the introductory chapter, the second section explains mineralogy, morphology and synthesis of zeolites and the third section focuses on the different applications of both natural and synthetic zeolites. So, in this book, the readers will obtain updated information on mineralogy, morphology, synthesis and application of zeolites. Scientists from different scientific fields reported in this book their findings.
Author: Moises Romolos Cesario Publisher: Elsevier ISBN: 0323856322 Category : Technology & Engineering Languages : en Pages : 554
Book Description
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
Author: Waralee Marungrueang
Author: Waralee Marungrueang
Author: Moises R. Cesario
Author: Supawat Pachop
Author: Abdul Basit
Author: Ji Siang Tan
Author: Mohammad Reza Rahimpour
Author: Inamuddin
Author: Humbul Suleman
Author: Mohamed Nageeb Rashed
Author: Moises Romolos Cesario