Catalytic coal liquefaction. Quarterly report, October-December 1981. [Ammonium molybdates]

Technical Report · Thu Jan 01 00:00:00 EST 1981

OSTI ID:5917053

Weller, S W

This research has the following scope and objectives: (1) to characterize supported molybdena catalysts, in the sulfide as well as in the oxide form, with respect to total surface area, specific surface area by oxygen chemisorption, and catalytic activity in a standardized test reaction; (2) to study the effect of preparational variables in the liquefaction of coal with efficient catalysts, with particular emphasis on molybdenum catalysts employed in very small amount. Summary of progress do date - Tubing bomb experiments on the transfer of hydrogen from tetralin to coal have been extended to a series of impregnated metal salts and two acids, all at 1% concentration. Coal conversion, moderately high even with no catalyst, is incrementally higher with all catalysts tested. Apparent hydrogen transfer, based on naphthalene produced, is also increased by all catalysts but especially by ammonium molybdate (AM) and stannous chloride (SnCl/sub 2/). Blank runs with catalyst but no coal show a finite amount of naphthalene production; except for AM and SnCl/sub 2/, the apparent catalysis of hydrogen transfer may be an artifact associated with a catalytic effect on tetralin dissociation. This question is being examined in autoclave runs, where the gas volume: liquid volume is greater. Runs at 400/sup 0/C indicate a surprising effect: both coal and AM separately catalyze tetralin dissociation, but their combined effect is greater than the sum of the individual ones (synergy). The possibility that catalytic generation of radicals from coal in turn catalyzes tetralin dissociation is being studied at 450/sup 0/C with bibenzyl as a radical generator. 3 tables.

• Research Organization: State Univ. of New York, Buffalo (USA)
• DOE Contract Number: FG22-81PC40781
• OSTI ID: 5917053
• Report Number(s): DOE/PC/40781-T12; FE-2013-18; ON: DE85009085
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
CATALYSTS
PERFORMANCE TESTING
COAL LIQUEFACTION
CATALYTIC EFFECTS
HYDROCHLORIC ACID
HYDROGEN TRANSFER
IRON SULFATES
MOLYBDATES
MOLYBDENUM SULFIDES
SULFURIC ACID
TETRALIN
TIN CHLORIDES
ZINC CHLORIDES
AMMONIUM COMPOUNDS
AUTOCLAVES
CATALYST SUPPORTS
COMPARATIVE EVALUATIONS
EXPERIMENTAL DATA
HIGH TEMPERATURE
MOLYBDENUM OXIDES
NAPHTHALENE
AROMATICS
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
CONDENSED AROMATICS
DATA
HALIDES
HALOGEN COMPOUNDS
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
IRON COMPOUNDS
LIQUEFACTION
MOLYBDENUM COMPOUNDS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
SULFATES
SULFIDES
SULFUR COMPOUNDS
TESTING
THERMOCHEMICAL PROCESSES
TIN COMPOUNDS
TIN HALIDES
TRANSITION ELEMENT COMPOUNDS
ZINC COMPOUNDS
ZINC HALIDES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction