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Languages : en
Pages :
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Carbon supported Pt and Pt-Co electrocatalysts for the oxygen reduction reaction in low temperature fuel cells were prepared by the reduction of the metal salts with sodium borohydride and sodium formate. The effect of surface treatment with nitric acid on the carbon surface and Co on the surface of carbon prior to the deposition of Pt was studied. The catalysts where Pt was deposited on treated carbon the ORR reaction preceded more through the two electron pathway and favored peroxide production, while the fresh carbon catalysts proceeded more through the four electron pathway to complete the oxygen reduction reaction. NaCOOH reduced Pt/C catalysts showed higher activity that NaBH4 reduced Pt/C catalysts. It was determined that the Co addition has a higher impact on catalyst activity and active surface area when used with NaBH4 as reducing agent as compared to NaCOOH.
Author: Kenneth G. Brown
Publisher:
ISBN:
Category : Carbon monoxide lasers
Languages : en
Pages : 42
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Author:
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Category : Aeronautics
Languages : en
Pages : 562
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Author: Li-chyong Chen
Publisher: World Scientific
ISBN: 9811284652
Category : Science
Languages : en
Pages : 298
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Nanomaterials have become a key component for energy-related applications. Their design principle, synthesis and applications are well discussed in various scientific and engineering books, but a gap remains in discussions regarding the application of cutting-edge X-ray techniques to these materials. This volume provides insights from the latest development of X-ray techniques to investigate nanomaterials in specific energy fields, bridging the gap between X-ray analytical scientists and material researchers.We aim to provide researchers with a tool to choose suitable X-ray techniques, carry them out with the right procedure, and analyze the data to give the best reliable results. The approach is microscopic and specific. Among the applications emphasized by the chapters in this book are x-ray techniques in heterogeneous catalysis, electrocatalysis for fuel cells, photocatalysis for water splitting and carbon dioxide reduction, organic photovoltaics, and other energy-related applications.
Author: A. Frennet
Publisher: Elsevier
ISBN: 0080544681
Category : Science
Languages : en
Pages : 959
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These proceedings are based on the third of a series of symposia devoted to the use of catalysis for the depollution of exhaust gases of motor vehicles. Although catalysts have been used for this purpose for some thirty years, the subject is still very topical because of its economic impact. The increasing number of submitted, accepted and published papers amply attests to this fact.
Author: John Regalbuto
Publisher: CRC Press
ISBN: 1420006509
Category : Science
Languages : en
Pages : 490
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Book Description
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.
Author: C. H. Bartholomew
Publisher: John Wiley & Sons
ISBN: 1118209737
Category : Technology & Engineering
Languages : en
Pages : 1224
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Catalysis is central to the chemical industry, as it is directly or involved in the production of almost all useful chemical products. In this book the authors, present the definitive account of industrial catalytic processes. Throughout Fundamentals of Industrial Catalytic Processes the information is illustrated with many case studies and problems. This book is valuable to anyone wanting a clear account of industrial catalytic processes, but is particularly useful to industrial and academic chemists and engineers and graduate working on catalysis. This book also: Covers fundamentals of catalytic processes, including chemistry, catalyst preparation, properties and reaction engineering. Addresses heterogeneous catalytic processes employed by industry. Provides detailed data on existing catalysts and catalytic reactions, process design and chemical engineering. Covers catalysts used in fuel cells.
Author:
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Category : Technology
Languages : en
Pages : 548
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ISBN:
Category : Science
Languages : en
Pages : 632
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Author: David R. Schryer
Publisher:
ISBN:
Category : Carbon dioxide lasers
Languages : en
Pages : 432
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