Exploratory study of coal-conversion chemistry. Quarterly report No. 7, November 19, 1982-February 18, 1983

Technical Report · Tue Mar 01 04:00:00 EST 1983

OSTI ID:6366106

Ross, D S; McMillen, D F; Ogier, W C; Chang, S J; Hum, G P; Mansani, R; Green, T K

Work has continued on deriving improved correlations between donor-solvent structure and coal conversion effectiveness. Addition of pyrene to tetralin has been found to increase the conversion of a low fluidity bituminous coal to THF solubles from 80 to 96%. By comparison, phenanthrene, 1-phenyl-napthlalene, and fluoranthrene increased the conversion by no more than 2 to 3 percentage points. These results support earlier suggestions that pyrene exhibits particular effectiveness as a hydrogen transfer agent. Various possible explanations for this increased effectiveness are considered in the light of previous and current work in this project on the cleavage of strong coal linkages in polycyclic aromatic and hydroaromatic solvents. Work was extended with the base-catalyzed CO/H/sub 2/O conversion system to include another Illinois No. 6 coal, PSOC-1098. The behavior of this coal is similar to another coal from the same mine, beneficiated PSOC-26, in that conversion is more effective in CO than in H/sub 2/. However, H/sub 2/ converts PSOC-1098 more effectively than it does PSOC-26, suggesting that the mineral matter catalyzes the reaction between the coal and H/sub 2/. The maximum conversions of the two coals in CO are virtually identical, although PSOC-1098 is much more reactive toward the H/sub 2/ produced by the water-gas-shift (WGS) reaction. This suggests that the active CO intermediate and Ha2 are competing for the same reactive site in the coal.

• Research Organization: SRI International, Menlo Park, CA (USA)
• DOE Contract Number: AC22-81PC40785
• OSTI ID: 6366106
• Report Number(s): DOE/PC/40785-7; ON: DE83011119
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
AROMATICS
BITUMINOUS COAL
BLACK COAL
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL BONDS
COAL
COAL LIQUEFACTION
CONDENSED AROMATICS
EFFICIENCY
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN TRANSFER
LIQUEFACTION
MATERIALS
MINERALS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PYRENE
STEAM
TETRALIN
THERMOCHEMICAL PROCESSES
WATER