Download or read book Low temperature Oxidation of CO and Volatile Organic Compounds Over Supported Platinum Catalysts written by Karl Arnby and published by . This book was released on 2004 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalysts for Low Temperature Decomposition of VOCs written by and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eltron Research, Inc., is currently developing multicomponent metal-oxide and supported noble-metal catalysts for the destruction of volatile organic compounds (VOCs) in air at low temperatures. The goal for this work is to produce a simple, cost-effective technology for reducing the concentration of VOCs in air to acceptable levels before the air is released into the atmosphere or recirculated. Specific application areas include ventilated work spaces for spray painting and engine maintenance (degreasing and fuel line repair), indoor air decontamination, dry cleaning, food processing (grills and deep fat fryers), fume hoods, residential use, and solvent-intensive industrial processes. The components of the catalysts were chosen based on their anticipated oxygen surface mobility, resistance to poisoning, multiple oxidations states, and documented activity for oxidation reactions. Catalysts were screened with and without dispersed platinum for conversion of 1-butanol, toluene, and methyl ethyl ketone (MEK) into carbon dioxide and water. The concentrations of VOCs in the feedstream were maintained at 100 ppm, and the space velocity was between 1,000 and 26,000/hr. Catalysts with the best overall performance in the absence of noble metals generated complete conversion of 1-butanol into CO2 at 150 deg. C, 47% conversion at 100 deg. C, and 15% conversion at 80 deg. C. For toluene these catalysts generated complete conversion at 200 deg. C, and conversions as high as 75% at 150 deg. C. Adding Platinum to these materials further improved low-temperature activity and routinely allowed greater than 50% conversion of VOCs to CO2 at temperatures of 100 deg. C and lower. Although it was generally found that catalyst destruction decreased in the order 1 -butanol>MEK>toluene, some of the most-active materials demonstrated different trends, as well as large disparities in activity for these VOCs.
Download or read book Low Temperature Catalytic Oxidation of Airborne Organic Materials written by and published by . This book was released on 2002 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eltron Research Inc. has developed multi-component metal oxide catalysts for destruction of volatile organic compounds (VOCs) in air at low temperatures. The goal for this work is to produce a simple, cost-effective technology for reducing the concentration of VOCs in air to acceptable levels before the air is released into the atmosphere or recirculated. Specific applications include ventilated work spaces for spray painting and engine maintenance (degreasing and fuel line repair), indoor air decontamination, dry cleaning, food processing (grills and deep fryers), fume hoods, residential use, and solvent-intensive industrial processes. The components of the catalysts were chosen based on their anticipated oxygen surface mobility, moisture tolerance, multiple oxidation states, and documented activity for oxidation reactions. Catalyst powders and monolith- supported catalysts were screened for conversion of 1 -butanol, toluene, and MEK to carbon dioxide and water. The concentrations of VOCs in the feedstream were maintained at ^100 ppm, and the space velocity was ^6,000 hr( -1). Catalysts highlighted in this document generated complete conversion of 1-butanol to CO2 at l50C, 69% conversion at lOOC, and 15% conversion at 80C. For toluene, complete conversion was achieved at 200C, and greater than 30% conversion at 150C. Catalysts deposited onto cordierite monoliths retained their composition and activity, and were stable in humid air. However, sulfur- and phosphorous-containing compounds quickly poisoned these catalysts through formation of sulfates and phosphates.
Download or read book Catalytic Combustion written by Sophie A. Cottilard and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Catalytic combustion has been developed as a method of promoting efficient combustion over a wide range of air-to-fuel ratios with a minimum pollutant formation at low temperatures as compared to conventional flame combustion. In this book, the authors present current research in the study of catalytic combustion including commercial and industrial research in combustion and fluidisation engineering; the catalytic combustion of soot; using metal oxides to improve catalytic efficiency; catalytic combustion in the removal of pollutants from exhaust gases and in the energy conversion field and the catalytic combustion of methane using ceria-zirconia.
Download or read book Low Temperature CO Oxidation on Supported Platinum and Cobalt Oxide Catalysts written by Peter Thormählen and published by . This book was released on 1999 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Calorimetry and Thermal Methods in Catalysis written by Aline Auroux and published by Springer Science & Business Media. This book was released on 2013-09-18 with total page 569 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is about calorimetry and thermal analysis methods, alone or linked to other techniques, as applied to the characterization of catalysts, supports and adsorbents, and to the study of catalytic reactions in various domains: air and wastewater treatment, clean and renewable energies, refining of hydrocarbons, green chemistry, hydrogen production and storage. The book is intended to fill the gap between the basic thermodynamic and kinetics concepts acquired by students during their academic formation, and the use of experimental techniques such as thermal analysis and calorimetry to answer practical questions. Moreover, it supplies insights into the various thermal and calorimetric methods which can be employed in studies aimed at characterizing the physico-chemical properties of solid adsorbents, supports and catalysts, and the processes related to the adsorption desorption phenomena of the reactants and/or products of catalytic reactions. The book also covers the basic concepts for physico-chemical comprehension of the relevant phenomena. Thermodynamic and kinetic aspects of the catalytic reactions can be fruitfully investigated by means of thermal analysis and calorimetric methods, in order to better understand the sequence of the elemental steps in the catalysed reaction. So the fundamental theory behind the various thermal analysis and calorimetric techniques and methods also are illustrated.
Download or read book Catalysts for the Oxidation of Carbon Monoxide at Low Temperatures written by and published by . This book was released on 1979 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Four catalysts (hopcalite, Whetlerite, a supported palladium, and a supported platinum) were tested for efficiency in promoting the oxidation of carbon monoxide (CO). At room temperature and 50% RH, hopcalite has no catalytic capability and platinum has practically none. At room temperature and 15% RH, hopcalite is superior to platinum in catalyzing the oxidation of CO. Hopcalite is more efficient than either of the other three catalysts in the 52 to 66 C (125 to 150 F) temperature range at both humidities. Platinum and palladium are superior to both hopcalite and Whetlerite at both humidities in the 113 to 135 C (235 to 275 F) temperature range. Higher humidity decreases the CO-oxidizing capabilities of hopcalite and Whetlerite but does not do so for platinum and palladium. Whetlerite is in the lower-performing group of catalysts under all except one of the different conditions used in the tests. For the hopcalite, palladium, and platinum catalysts there is a temperature below 135 C (275 F) and above 68 C (155 F) at which CO can be oxidized efficiently.
Download or read book Low temperature CO Oxidation Over a Ternary Oxide Catalyst with High Resistance to Hydrocarbon Inhibition written by and published by . This book was released on 2015 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Platinum group metal (PGM) catalysts are the current standard for control of pollutants in automotive exhaust streams. Aside from their high cost, PGM catalysts struggle with CO oxidation at low temperatures (
Download or read book Handbook Of Advanced Methods And Processes In Oxidation Catalysis From Laboratory To Industry written by Daniel Duprez and published by World Scientific. This book was released on 2014-07-24 with total page 1035 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a comprehensive overview of the most recent developments in both total oxidation and combustion and also in selective oxidation. For each topic, fundamental aspects are paralleled with industrial applications. The book covers oxidation catalysis, one of the major areas of industrial chemistry, outlining recent achievements, current challenges and future opportunities. One distinguishing feature of the book is the selection of arguments which are emblematic of current trends in the chemical industry, such as miniaturization, use of alternative, greener oxidants, and innovative systems for pollutant abatement. Topics outlined are described in terms of both catalyst and reaction chemistry, and also reactor and process technology.
Download or read book New and Future Developments in Catalysis written by Steven L Suib and published by Newnes. This book was released on 2013-07-17 with total page 631 pages. Available in PDF, EPUB and Kindle. Book excerpt: New and Future Developments in Catalysis is a package of seven books that compile the latest ideas concerning alternate and renewable energy sources and the role that catalysis plays in converting new renewable feedstock into biofuels and biochemicals. Both homogeneous and heterogeneous catalysts and catalytic processes will be discussed in a unified and comprehensive approach. There will be extensive cross-referencing within all volumes.The various sources of environmental pollution are the theme of this volume. The volume lists all current environmentally friendly catalytic chemical processes used for environmental remediation and critically compares their economic viability. Offers in-depth coverage of all catalytic topics of current interest and outlines future challenges and research areas A clear and visual description of all parameters and conditions, enabling the reader to draw conclusions for a particular case Outlines the catalytic processes applicable to energy generation and design of green processes
Download or read book Low Temperature Oxidation of Ammonia Over Supported Platinum written by John Joseph Ostermaier and published by . This book was released on 1974 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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
Download or read book The Catalytic Oxidation of Organic Compounds in the Vapor Phase written by Leroy Frank Marek and published by . This book was released on 1932 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low Temperature Catalytic Oxidation of Carbon Monoxide Over Silica Supported Palladium Catalysts written by Dipankar Koley and published by . This book was released on 2005 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalytic Oxidation of Volatile Organic Liquids written by and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal oxide and supported-Pt catalysts were developed for complete oxidation of volatile organic compounds (VOCs) and other solvent-derived organic vapors (OVs) in air at relatively low temperatures. The goal for this work is to produce a simple, cost- effective technology for reducing the concentration of organic contaminants in air to acceptable levels before the air is released into the atmosphere or recirculated. Specific applications include ventilated work spaces for spray painting and engine maintenance, indoor air decontamination, dry cleaning, food processing, fume hoods, residential use, and solvent-intensive industrial processes. Catalyst powders and monolith-supported catalysts were screened for conversion of 1-butanol, toluene, and methyl ethyl ketone to carbon dioxide and water. ... However, the catalysts quickly deactivated in the presence of sulfur and phosphorus.
Download or read book Environmental Catalysis written by John N. Armor and published by American Chemical Society. This book was released on 1994 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first comprehensive volume on the major aspects of environmental catalysis. Focuses on NO x removal, mobile engine emission controls, power plant emissions, control of volatile organic compounds, SO x emissions, and waste minimization. Overview chapters introduce each section and provide added perspective and coverage. Includes comprehensive technical reports on automotive and diesel emission control catalysis, NO x removal, and removal of chlorinated hydrocarbons from various process streams.
Download or read book Heterogeneous Gold Catalysts and Catalysis written by Zhen Ma and published by Royal Society of Chemistry. This book was released on 2014-08-20 with total page 635 pages. Available in PDF, EPUB and Kindle. Book excerpt: Once considered an inert element, gold has recently gained attention as a catalyst. With hundreds of papers being published each year, this book presents a comprehensive review of this rapidly-evolving field, with contributions by leading experts across the globe. Going through the chapters citing the primary literature, the reader will gain a thorough background to the use of gold in catalysis, as well as the latest methods for the preparation of gold catalysts. Other chapters demonstrate the characterisation and modelling of gold-catalysed reactions, with consideration given to both the fundamentals and commercial applications of this emerging group of catalysts. Written to be accessible by postgraduates and newcomers to the field, this book will also benefit experienced researchers and therefore be an essential reference in the laboratory.
