A Kinetic Mechanism for the Vapor-phase Oxidation of O'xylene Over a Vanadium Oxide Catalyst PDF Download
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Author: Jack Allan Juusola
Publisher:
ISBN:
Category : Chemical kinetics
Languages : en
Pages : 500
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Author: Jack Allan Juusola
Publisher:
ISBN:
Category : Chemical kinetics
Languages : en
Pages : 500
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Book Description
![A Kinetic Mechanism for the Vapor-phase Oxidation of O-xylene Over a Vanadium Oxide Catalyst [microform] PDF](https://books.google.com/books/content/images/frontcover/M_OHtgAACAAJ?fife=w80-h100)
Author: Jack Allan Juusola
Publisher: National Library of Canada
ISBN:
Category :
Languages : en
Pages :
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Author: John Downie
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Richard Shih-Chun Chu
Publisher:
ISBN:
Category : Catalysts
Languages : en
Pages : 142
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"This investigation was conducted to further study the vapor-phase oxidation or o-xylene to phthalic anhydride in a fluidized bed catalytic reactor. Parameters investigated during the study were temperature, catalyst volume, and catalyst activated by use or different promoters. Two different vanadium pentoxide catalysts were used. One was a new catalyst(Catalyst I) supported on a silica base and diluted with potassium sulfate. The other catalyst(Catalyst II) was similar to the first one except that it had been used in a commercial fixed bed reactor operated by the Monsanto Company, St. Louis, Missouri, using naphthalene as a reed material. It had been suggested that this second catalyst would be "activated" whereas the fresh catalyst would not am the used catalyst would thus give higher yield or phthalic anhydride. Little difference in yield or phthalic anhydride was found, the used catalyst giving slightly lower yields. These studies were conducted on a laboratory scale in equipment similar to that used in earlier studies by Wang(12) but modified in several respects. Phthalic anhydride, maleic anhydride, o-toluic aldehyde, carbon dioxide and water were obtained as oxidation products. Except water, they are all determined by quantitative analysis. Two different amounts of Catalyst I (24 grams and 102 grams) were used at five different temperatures C320,400,450,490,520°C) to study the effect on the yield per cent or phthalic anhydride. It was found that the optimum reaction temperature is at 490°C when using either amount of catalyst. The highest yields of phthalic anhydride obtained were 21.5 per cent when using 24 grams of Catalyst I and 24.3 per cent when using 102 grams. The highest yield of phthalic anhydride was 19.6 per cent when 137 grams of Catalyst II were used at 490°C and the lowest yield was 9.6 per cent at 320°C. The effect of the addition of bromine, phenol bromide, and 1-3 dibromo-propane, as promoters, was also investigated. These promoters were introduced into the liquid o-xylene feed in separate tests. It was again found from a number of tests at different reactor temperatures that 490°C gave the highest yield of phthalic anhydride, 36.2 per cent. This yield was obtained using 5 per cent by volume of liquid bromine in the feed and 102 grams of Catalyst I"--Abstract, pages ii-iii.
Author: Jyue-Sheng Wang
Publisher:
ISBN:
Category : Catalysts
Languages : en
Pages : 156
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"This investigation was conducted to study the vapor-phase oxidation of o-xylene to phthalic anhydride in a fluidized bed reactor. Parameters investigated during the study were temperature, molar ratio of air to o-xylene vapor, and space velocity. The catalyst used was vanadium pentoxide supported on a silica base and diluted with potassium sulfate. The studies were conducted on a laboratory scale"--Abstract, leaf ii.
Author: Daniel Duprez
Publisher: World Scientific
ISBN: 1783263342
Category : Science
Languages : en
Pages : 1035
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Book Description
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.
Author:
Publisher:
ISBN:
Category : Catalysis
Languages : en
Pages : 704
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Author: Leroy Frank Marek
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 512
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Author: Elio Santacesaria
Publisher: Springer
ISBN: 3319974394
Category : Science
Languages : en
Pages : 574
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Book Description
This graduate textbook, written by a former lecturer, addresses industrial chemical reaction topics, focusing on the commercial-scale exploitation of chemical reactions. It introduces students to the concepts behind the successful design and operation of chemical reactors, with an emphasis on qualitative arguments, simple design methods, graphical procedures, and frequent comparison of capabilities of the major reactor types. It starts by discussing simple ideas before moving on to more advanced concepts with the support of numerous case studies. Many simple and advanced exercises are present in each chapter and the detailed MATLAB code for their solution is available to the reader as supplementary material on Springer website. It is written for MSc chemical engineering students and novice researchers working in industrial laboratories.
Author: Gilbert Irving Addis
Publisher:
ISBN:
Category : Catalysis
Languages : en
Pages : 164
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