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Title: Superacid catalyzed coal conversion chemistry. Final technical report, September 1, 1983-September 1, 1986

Abstract

This 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 temperatues (170/sup 0/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.

Authors:
Publication Date:
Research Org.:
University of Southern California, Los Angeles (USA). Loker Hydrocarbon Research Inst.
Sponsoring Org.:
U. S. Department of Energy (DOE)
OSTI Identifier:
5253008
Report Number(s):
DOE/PC/60810-T10
ON: DE86015045
DOE Contract Number:  
FG22-83PC60810
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
01 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; 010405* - Coal, Lignite, & Peat- Hydrogenation & Liquefaction

Citation Formats

Olah, G.A. Superacid catalyzed coal conversion chemistry. Final technical report, September 1, 1983-September 1, 1986. United States: N. p., 1986. Web. doi:10.2172/5253008.
Olah, G.A. Superacid catalyzed coal conversion chemistry. Final technical report, September 1, 1983-September 1, 1986. United States. doi:10.2172/5253008.
Olah, G.A. Wed . "Superacid catalyzed coal conversion chemistry. Final technical report, September 1, 1983-September 1, 1986". United States. doi:10.2172/5253008. https://www.osti.gov/servlets/purl/5253008.
@article{osti_5253008,
title = {Superacid catalyzed coal conversion chemistry. Final technical report, September 1, 1983-September 1, 1986},
author = {Olah, G.A.},
abstractNote = {This 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 temperatues (170/sup 0/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.},
doi = {10.2172/5253008},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1986},
month = {Wed Jan 01 00:00:00 EST 1986}
}

Technical Report:

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