147 K
5 pp.
View Document 
TitleSuperacid Catalyzed Coal Conversion Chemistry. 1st and 2nd Quarterly Technical Progress Reports, September 1, 1983-March 30, 1984.
Author(s)Olah, G. A.
Publication Date1984
Report NumberDOE/PC/60810-T1
Unique IdentifierACC0357
Other NumbersLegacy ID: DE84009671; OSTI ID: 5165212
Research OrgUniversity of Southern California, Los Angeles (USA)
Contract NoFG22-83PC60810
Sponsoring OrgUS Department of Energy (DOE)
Other InformationModel compound consisting of 2 benzene rings connected with various bridging units such as alkylidene, ether, sulfide, etc
Subject01 Coal, Lignite, and Peat; 37 Inorganic, Organic, Physical and Analytical Chemistry; Aromatics; Depolymerization; Boron Fluorides; Catalytic Effects; Coal; Coal Liquefaction; Catalysts; Chemistry; Hydrofluoric Acid; Cyclohexane; High Temperature; Hydrogen; Medium Temperature; Pyridine; Research Programs; Structural Models; Temperature Dependence; Alkanes; Azines; Boron Compounds; Carbonaceous Materials; Chemical Reactions; Cycloalkanes; Decomposition; Elements; Energy Sources; Fluorides; Fluorine Compounds; Fossil Fuels; Fuels; Halides; Halogen Compounds; Heterocyclic Compounds; Hydrocarbons; Hydrogen Compounds; Inorganic Acids; Liquefaction; Materials; Nonmetals; Organic Compounds; Organic Nitrogen Compounds; Pyridines; Thermochemical Processes
Related Web PagesGeorge A. Olah, Carbocation and Hydrocarbon Chemistry
AbstractIn our laboratories we have previously developed a mild coal conversion process. This involves the use of a superacid system consisting of HF and BF{sub 3} in presence of hydrogen and/or a hydrogen donor solvent. In order to understand the chemistry involved in the process of depolymerization of coal by the HF:BF{sub 3}:H{sub 2} system we are carrying out a systematic study of a number of coal model compounds. The model compounds selected for present study have two benzene rings connected with various bridging units such as alkylidene, ether, sulfide etc. From studies so far carried out it appears that high pyridine extractibilities achieved by treating coal at temperature below 100 degrees C results from the cleavage of bridges such as present in bibenzyl, diphenyl methane, dibenzyl ether, dibenzyl sulfide etc. On the other hand the increased cyclohexane extractibility and distillability observed at relatively higher temperatures and hydrogen pressures reflects the hydrogenation and cleavage of the aromatic backbone in coal structure similar to what is seen in the conversion of model compounds such as biphenyl, diphenyl ether, diphenyl sulfide, anthracene, etc.
147 K
5 pp.
View Document 

Some links on this page may take you to non-federal websites. Their policies may differ from this site.