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TitleSuperacid Catalyzed Coal Conversion Chemistry. Final Technical Report, September 1, 1983-September 1, 1986
Author(s)Olah, G. A.
Publication Date1986
Report NumberDOE/PC/60810-T10
Unique IdentifierACC0358
Other NumbersLegacy ID: DE86015045; OSTI ID: 5253008
Research OrgUniversity of Southern California, Los Angeles (USA). Loker Hydrocarbon Research Institute
Contract NoFG22-83PC60810
Sponsoring OrgUS Department of Energy (DOE)
Subject01 Coal, Lignite, and Peat; Boron Fluorides; Catalytic Effects; Coal; Depolymerization; Coal Liquefaction; Chemistry; Hydrofluoric Acid; Alkylation; Catalysts; Cleavage; High Temperature; Hydrogenation; Research Programs; Structural Models; Boron Compounds; Carbonaceous Materials; Chemical Reactions; Crystal Structure; Decomposition; Energy Sources; Fluorides; Fluorine Compounds; Fossil Fuels; Fuels; Halides; Halogen Compounds; Hydrogen Compounds; Inorganic Acids; Liquefaction; Materials; Microstructure; Thermochemical Processes
Related Web PagesGeorge A. Olah, Carbocation and Hydrocarbon Chemistry
AbstractThis research project involved the study of a raw comparatively mild coal conversion process. The goal of the project was to study model systems to understand the basic chemistry involved and to provide a possible effective pretreatment of coal which significantly improves liquefaction-depolymerization under mild conditions. The conversion process operates at relatively low temperatures (170 degrees C) and pressures and uses an easily recyclable, stable superacid catalysts (HF-BF{sub 3}). It consequently offers an attractive alternative to currently available processes. From the present studies it appears that the modification of coal structure by electrophilic alkylation and subsequent reaction of alkylated coal with HF-BF{sub 3}-H{sub 2} system under mild conditions considerably improves the extractability of coal in pyridine and cyclohexane. On the other hand, nitration of coal and its subsequent reaction with HF-BF{sub 3}H{sub 2} decreases the pyridine and cyclohexane extractability. Study of model compounds under conditions identical with the superacidic HF/BF{sub 3}/H{sub 2} system provided significant information about the basic chemistry of the involved cleavage-hydrogenation reactions.
249 K
6 pp.
 
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