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Factors Influencing The Zinc Chloride Catalyst Activity Under Mild Coal Liquefaction Conditions
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Book Synopsis Factors Influencing the Zinc Chloride Catalyst Activity Under Mild Coal Liquefaction Conditions by : Steven Jun Fong
Download or read book Factors Influencing the Zinc Chloride Catalyst Activity Under Mild Coal Liquefaction Conditions written by Steven Jun Fong and published by . This book was released on 1983 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Zinc Chloride Catalysis in Coal and Biomass Liquefaction at Pre-pyrolysis Temperatures by : Christopher Ogbonnaya Onu
Download or read book Zinc Chloride Catalysis in Coal and Biomass Liquefaction at Pre-pyrolysis Temperatures written by Christopher Ogbonnaya Onu and published by . This book was released on 1980 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Catalytic Coal Liquefaction Using Zinc Chloride in Combination with Selected Solvents by : Mark Alan Baich
Download or read book Catalytic Coal Liquefaction Using Zinc Chloride in Combination with Selected Solvents written by Mark Alan Baich and published by . This book was released on 1986 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Coal Liquefaction Using Zinc Chloride Catalyst in an Extracting Solvet Medium by : Shamim Ahmed Gandhi
Download or read book Coal Liquefaction Using Zinc Chloride Catalyst in an Extracting Solvet Medium written by Shamim Ahmed Gandhi and published by . This book was released on 1979 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Catalytic Liquefaction by Zinc Chloride Melts at Pre-pyrolysis Temperature by :
Download or read book Catalytic Liquefaction by Zinc Chloride Melts at Pre-pyrolysis Temperature written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid-phase catalysts have proved effective for opening chemical linkages in subbituminous coal and capping the reactive segments with hydrogen atoms or other low-molecular-weight groups. The preferred temperature range is 275 to 325°C (530 to 620°F), so that the linkages are opened by controlled catalytic action rather than by thermal pyrolysis which requires appreciably higher temperatures. The best catalyst melt compositions used to date are zinc chloride with 10% water together with tetralin, and zinc chloride with 15% methanol and 3% of zinc metal. Useful residence times range from 30 minutes, or less, to as high as 90 minutes. The products of the treatment have predominately low (300) to medium (3000) molecular weights, analogous to syncrudes and solvent-refined coal. Conversions to pyridine-soluble products of 95% or better are achieved with Wyodak Roland Seam coal, and to date as much as 70% of that coal has been recovered as toluene-solubles (oils and asphaltenes). A major benefit of these conversion conditions is the almost complete absence of by-product char or gas. At these lower temperatures the hydrogen pressures used can be less than in conventional liquefaction; for example, 40 atm rather than 100 atm or more. Hydrogen consumption is significantly lower than in conventional liquefaction; the product yield is higher; and simpler procedures are foreseen for product recovery. The research performed so far clearly shows the industrial potential of homogeneous (liquid-phase) catalysts in penetrating and interacting with the mild temperature and pressure of these studies.
Book Synopsis The Effect of Process Parameters in Zinc-chloride-catalyzed Coal Liquefaction at Temperatures Below Pyrolysis by : James Timothy Edwards
Download or read book The Effect of Process Parameters in Zinc-chloride-catalyzed Coal Liquefaction at Temperatures Below Pyrolysis written by James Timothy Edwards and published by . This book was released on 1983 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Process Considerations in ZnCl2-catalyzed Coal Liquefaction by : Antonio Iván Jiménez
Download or read book Process Considerations in ZnCl2-catalyzed Coal Liquefaction written by Antonio Iván Jiménez and published by . This book was released on 1983 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design and Evaluation of a Continuous, Low Temperature, Zinc Chloride Catalysed Coal Liquefaction Process by : Seymour Cherney
Download or read book Design and Evaluation of a Continuous, Low Temperature, Zinc Chloride Catalysed Coal Liquefaction Process written by Seymour Cherney and published by . This book was released on 1987 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Catalyst Dispersion and Activity Under Conditions of Temperature-staged Liquefaction by :
Download or read book Catalyst Dispersion and Activity Under Conditions of Temperature-staged Liquefaction written by and published by . This book was released on 1992 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: The general objectives of this research are (1) to investigate the use of highly dispersed catalysts for the pretreatment of coal by mild hydrogenation, (2) to identify the active forms of the catalysts under reaction conditions and (3) to clarify the mechanisms of catalysis. The ultimate objective is to ascertain if mild catalytic hydrogenation resulting in very limited or no coal solubilization is an advantageous pretreatment for the transformation of coal into transportable fuels. The experimental program will focus upon the development of effective methods of impregnating coal with catalysts, evaluating the conditions under which the catalysts are most active and establishing the relative impact of improved impregnation on conversion and product distributions obtained from coal hydrogenation.
Book Synopsis Chemistry and Catalysis of Coal Liquefaction by :
Download or read book Chemistry and Catalysis of Coal Liquefaction written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Analysis of a group of coal liquids produced by catalytic hydrogenation of Utah coals with ZnCl/sub 2/ catalyst was begun. Carbon-13 nuclear magnetic resonance and liquid chromatography techniques will be used to correlate chemical properties with hydrogenation reactivity. Equipment previously used for downflow measurements of heat and momentum transfer in a gas-coal suspension was modified for upflow measurements. The catalytic hydrodeoxygenation of methyl benzoate has been studied to elucidate the reactions of ester during upgrading of coal-derived liquids. The kinetics of hydrogenation of phenanthrene have also been determined. The catalytic cracking mechanism of octahydroanthracene is reported in detail. Studies of the hydrodesulfurization of thiophene indicate that some thiophene is strongly adsorbed as a hydrogen-deficient polymer on cobalt-molybdate catalyst. Part of the polymer can be desorbed as thiophene by hydrogenation. Poisoning of the catalyst inhibits the hydrosulfurization activity to a greater degree than the hydrogenation activity. Iron-manganese catalysts for carbon monoxide hydrogenation is studied to determine the role of iron carbide formation on selectivity. Pure iron catalyst forms a Hagg iron carbide phase under reaction conditions.
Book Synopsis Treatment of Recycle Solvents for Zinc Chloride-catalyzed Coal Liquefaction by : Leslie Crystal Flagg
Download or read book Treatment of Recycle Solvents for Zinc Chloride-catalyzed Coal Liquefaction written by Leslie Crystal Flagg and published by . This book was released on 1983 with total page 152 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 1978 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin written by and published by . This book was released on 1967 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bulletin by : United States. Bureau of Mines
Download or read book Bulletin written by United States. Bureau of Mines and published by . This book was released on 1950 with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrogenation of Coal in the Batch Autoclave by : Charles O. Hawk
Download or read book Hydrogenation of Coal in the Batch Autoclave written by Charles O. Hawk and published by . This book was released on 1965 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1982 with total page 834 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis ERDA Energy Research Abstracts by : United States. Energy Research and Development Administration
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1977 with total page 1104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
