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Effect Of Catalyst Support Properties On Hydrodenitrogenation Of A Coal Liquid
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Book Synopsis Effect of Catalyst Support Properties on Hydrodenitrogenation of a Coal Liquid by : Rajasundaram Sivasubramanian
Download or read book Effect of Catalyst Support Properties on Hydrodenitrogenation of a Coal Liquid written by Rajasundaram Sivasubramanian and published by . This book was released on 1977 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Catalysts for upgrading coal-derived liquids by : Oklahoma State University. School of Chemical Engineering
Download or read book Catalysts for upgrading coal-derived liquids written by Oklahoma State University. School of Chemical Engineering and published by . This book was released on 1976 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Unique Catalysts for Hydrodenitrogenation of Coal-derived Liquids. Annual Report, September 15, 1979-September 15, 1980 by :
Download or read book Development of Unique Catalysts for Hydrodenitrogenation of Coal-derived Liquids. Annual Report, September 15, 1979-September 15, 1980 written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrodenitrogenation of quinoline and decahydroquinoline has been studied employing several catalysts: Bronsted and Lewis acid catalysts without metal, and silica-alumina, .gamma.-alumina and magnesia impregnated with molybdenum, tungsten, nickel or cobalt. Our results show that nitrogen removal rate was highest for molybdenum on alumina and tungsten on silica-alumina or alumina catalysts. Nitrogen abstraction using .gamma.-alumina support is considerably faster than with magnesia support. Several catalysts have been prepared and tested, with the emphasis on understanding the role of acidity in the carbon-nitrogen bond scission reaction. Hydrodenitrogenation of quinoline has been studied by using Ni, Mo/chlorided or fluorided alumina catalysts, with various halide concentrations. Preliminary results from this study indicate that halogenation of .gamma.-alumina catalysts slightly enhanced the hydrogenolysis activity but showed little effect on the hydrogenation activity. Initial results from phenothiazine hydroprocessing show that carbon-sulfur bonds in the reactant are broken much faster than the carbon-nitrogen bonds. Data relevant to this reaction are being evaluated, utilizing kinetic analysis to give quantitative rates of C-N and C-S bond scission and the extents and rates of hydrogenation. Note: this report contains 5th, 6th, 7th and 8th quarterly reports.
Book Synopsis Chemistry and Catalysis of Coal Liquefaction Catalytic and Thermal Upgrading of Coal Liquid and Hydrogenation of CO to Produce Fuels. Quarterly Progress Report, July-September 1980 by :
Download or read book Chemistry and Catalysis of Coal Liquefaction Catalytic and Thermal Upgrading of Coal Liquid and Hydrogenation of CO to Produce Fuels. Quarterly Progress Report, July-September 1980 written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies on the basic properties of supported sulfide catalysts showed that different supports have a profound influence on catalytic activities of CoMo catalysts. The three functions of hydrodesulfurization, hydrogenation and cracking were differently affected depending on the support used and the manner of preparation of the catalyst. Also, incorporation of additives to the support showed that the different catalytic functions can be selectively affected. A systematic study concerned with catalytic cracking of coal-derived liquids, viz., an SRC-II middle-heavy distillate and four hydrotreated SRC-II products was carried out in the range of 375 to 500/sup 0/C (LHSV, 0.2 to 3.9 h/sup -1/). Hydrotreatment, even to a limited extent, results in a remarkable improvement in the yield of gasoline-range products from the SRC-II distillate. This improvement is ascribed to: (a) hydrogenolysis reactions leading to lower molecular weight feedstock components and (b) limited hydrogenation of aromatic rings leading to polycyclic feed components with sufficient concentration of hydroaromatic rings needed for effective cracking. The results with model compounds and the data on hydrogen consumption during hydrotreatment of SRC-II liquids indicate that for tricyclic, tetracyclic, and pentacyclic coal-liquid components the optimal concentration of hydroaromatic rings for effective subsequent cracking is at least two rings per molecule.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-11 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fossil Energy Update written by and published by . This book was released on 1981 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 1572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Catalysis in Coal Conversion by : James Cusumano
Download or read book Catalysis in Coal Conversion written by James Cusumano and published by Elsevier. This book was released on 2012-12-02 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: Catalysis in Coal Conversion tells of the advances in catalysis and related fields in order to suggest decisive contributions towards finding solutions for the catalytic problems of coal conversion. The book also details the preparation, mode of action, and behavior of various catalysts. The book is divided into three major parts, the first of which discusses the advances of catalysis during the last two decades including the bimetallic catalysts. Other areas of interest covered in the first part include characterization and preparation of catalysts; poisoning and regeneration; and reaction mechanisms. Part II summarizes the developments of related disciplines such as reactor engineering, inorganic and organometallic chemistry, materials science, and surface science. The last part serves as a review of the nature of the different coal liquefaction processes and their products. This book is of value to chemists and chemical engineers involved in coal conversion or fuel processing researches. Chemistry teachers and students can also use this book for examples of practical applications in industrial catalysis.
Book Synopsis A Survey of Catalysts for the Hydrodenitrogenation of Coal-derived Liquids by : Carol Jean Payne
Download or read book A Survey of Catalysts for the Hydrodenitrogenation of Coal-derived Liquids written by Carol Jean Payne and published by . This book was released on 1977 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Unique Catalysts for Hydrodenitrogenation of Coal-derived Liquids. Annual Report, September 15, 1978-September 14, 1979 by :
Download or read book Development of Unique Catalysts for Hydrodenitrogenation of Coal-derived Liquids. Annual Report, September 15, 1978-September 14, 1979 written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Preliminary results from decahydroquinoline hydrodenitrogenation runs show that Bronsted acidity by itself will not catalyze carbon-nitrogen bond scission. The C-N bond cleavage must therefore be catalyzed by an active site, which consists of a transition metal ion in close proximity to an acid site. It appears that hydrodenitrogenation requires both an acidic and a basic site for the Hoffman E2 elimination reaction to occur. Several catalysts have been prepared and tested, including Bronsted and Lewis acid catalysts without metal, and silica-alumina and .gamma.-alumina impregnated with molybdenum, vanadium, nickel or iron. Our results show that the nitrogen removal rate was highest for molybdenum on .gamma.-alumina catalyst and the rate decreased with lower Mo concentrations. Aluminum borate and aluminum borate phosphate catalysts (with or without nickel) were prepared to develop novel catalysts that would selectively coordinate the nitrogen atom and remove it without excessive hydrogenation. Results show that the support plays an important role in the nitrogen-removal process. Hydrodenitrogenation of aniline has been studied over a presulfided Ni-Mo/.gamma.-Al2O3 catalyst, and a reaction network has been proposed. Aniline hydrodenitrogenation appears to involve partial hydrogenation of the benzene ring to reduce aromatic resonance with the nitrogen atom, thus reducing the C-N bond strength and facilitating NH3 elimination.
Book Synopsis The Denitrogenation of Coal Liquids by : W C. Lanning
Download or read book The Denitrogenation of Coal Liquids written by W C. Lanning and published by . This book was released on 1978 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Hydrogen Pressure on First-Stage Coal Liquefaction with Dispersed and Supported Catalysts by : M. V. Ciocco
Download or read book The Effect of Hydrogen Pressure on First-Stage Coal Liquefaction with Dispersed and Supported Catalysts written by M. V. Ciocco and published by . This book was released on 1995 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrodenitrogenation of Coal Liquids and Petroleum with Heterogeneous Catalysts in Multiphase Reactors by : C. M. Stander
Download or read book Hydrodenitrogenation of Coal Liquids and Petroleum with Heterogeneous Catalysts in Multiphase Reactors written by C. M. Stander and published by . This book was released on 1979 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1989 with total page 762 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book BETC/IC written by and published by . This book was released on 1978 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Unique Catalysts for Hydrodenitrogenation of Coal-derived Liquids by : James Robert Katzer
Download or read book Development of Unique Catalysts for Hydrodenitrogenation of Coal-derived Liquids written by James Robert Katzer and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coal Abstracts written by and published by . This book was released on 1991 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:
