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Studies on the catalysts for coal liquefaction. ; Kinetic discussion in initial stage of coal liquefaction. Sekitan ekikayo shokubai ni kansuru kenkyu. ; Sekitan ekika shoki dankai no sokudoronteki kosatsu

Miscellaneous:

Abstract

Discussions were given on features of various kinds of coal liquefaction catalysts exhibited by them in hydrocracking of coal (Taiheiyo coal), and particularly on selectivity of the reaction in its initial stage. Four kinds of catalysts were tested: Adkins catalyst which is an oxide of copper and chromium, Fe2O3+S, Mo-TiO2 and MoS3-Al2O3. Three grams of coal and 0.3 gram each of the catalysts were charged into an autoclave reactor and experiment was conducted under an initial hydrogen pressure of 10 MPa, temperatures from 653 K to 693 K and for durations of 0 to 120 minutes to derive apparent reaction rate constants. The MoS3-Al2O3 catalyst has promoting the reaction apparently in the primary reaction at any temperature, while the other catalysts had the rate constants varied in the initial and the later stages. It was recognized that the temperature dependence of rate constants varies considerably according to the types of catalyst. Particularly the MoO3-TiO3 catalyst has small temperature dependence in the rate constants, and high molecular weight reducing power. 3 refs., 4 figs., 3 tabs.
Authors:
Muraoka, T; Ikenaga, N; Oda, H; Yokokawa, C [1] 
  1. Kansai University, Osaka (Japan). Faculty of Engineering
Publication Date:
Nov 29, 1990
Product Type:
Miscellaneous
Report Number:
CONF-9011320-
Reference Number:
NEDO-92-913535; EDB-93-044569
Resource Relation:
Conference: The 27th coal science conference (1990), Dai 27 kai sekitan kagaku kaigi (1990), Tokyo (Japan), 29-30 Nov 1990; Related Information: In: Proceedings of the 27th Coal Science Conference (1990). Dai 27 kai sekitan kagaku kaigi happyo ronbunshu (1990), 347 p
Subject:
01 COAL, LIGNITE, AND PEAT; CATALYST SUPPORTS; ALUMINIUM OXIDES; CHROMIUM OXIDES; TITANIUM OXIDES; CATALYSTS; COAL LIQUEFACTION; COPPER; IRON OXIDES; MOLYBDENUM; MOLYBDENUM SULFIDES; SULFUR; CHEMICAL REACTION KINETICS; HYDROCRACKING; DEPOLYMERIZATION; TEMPERATURE DEPENDENCE; ALUMINIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; CHROMIUM COMPOUNDS; CRACKING; DECOMPOSITION; ELEMENTS; IRON COMPOUNDS; KINETICS; LIQUEFACTION; METALS; MOLYBDENUM COMPOUNDS; NONMETALS; OXIDES; OXYGEN COMPOUNDS; PYROLYSIS; REACTION KINETICS; REFRACTORY METAL COMPOUNDS; SULFIDES; SULFUR COMPOUNDS; THERMOCHEMICAL PROCESSES; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; 010405* - Coal, Lignite, & Peat- Hydrogenation & Liquefaction
OSTI ID:
6758963
Research Organizations:
Fuel Society of Japan, Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE93775950
Availability:
OSTI; NTIS; Available from The Fuel Society of Japan, 5-4, Sotokanda 6-chome, Chiyoda-ku, Tokyo, Japan
Submitting Site:
NEDO
Size:
Pages: 119-122; (347 p)
Announcement Date:

Miscellaneous:

Citation Formats

Muraoka, T, Ikenaga, N, Oda, H, and Yokokawa, C. Studies on the catalysts for coal liquefaction. ; Kinetic discussion in initial stage of coal liquefaction. Sekitan ekikayo shokubai ni kansuru kenkyu. ; Sekitan ekika shoki dankai no sokudoronteki kosatsu. Japan: N. p., 1990. Web.
Muraoka, T, Ikenaga, N, Oda, H, & Yokokawa, C. Studies on the catalysts for coal liquefaction. ; Kinetic discussion in initial stage of coal liquefaction. Sekitan ekikayo shokubai ni kansuru kenkyu. ; Sekitan ekika shoki dankai no sokudoronteki kosatsu. Japan.
Muraoka, T, Ikenaga, N, Oda, H, and Yokokawa, C. 1990. "Studies on the catalysts for coal liquefaction. ; Kinetic discussion in initial stage of coal liquefaction. Sekitan ekikayo shokubai ni kansuru kenkyu. ; Sekitan ekika shoki dankai no sokudoronteki kosatsu." Japan.
@misc{etde_6758963,
title = {Studies on the catalysts for coal liquefaction. ; Kinetic discussion in initial stage of coal liquefaction. Sekitan ekikayo shokubai ni kansuru kenkyu. ; Sekitan ekika shoki dankai no sokudoronteki kosatsu}
author = {Muraoka, T, Ikenaga, N, Oda, H, and Yokokawa, C}
abstractNote = {Discussions were given on features of various kinds of coal liquefaction catalysts exhibited by them in hydrocracking of coal (Taiheiyo coal), and particularly on selectivity of the reaction in its initial stage. Four kinds of catalysts were tested: Adkins catalyst which is an oxide of copper and chromium, Fe2O3+S, Mo-TiO2 and MoS3-Al2O3. Three grams of coal and 0.3 gram each of the catalysts were charged into an autoclave reactor and experiment was conducted under an initial hydrogen pressure of 10 MPa, temperatures from 653 K to 693 K and for durations of 0 to 120 minutes to derive apparent reaction rate constants. The MoS3-Al2O3 catalyst has promoting the reaction apparently in the primary reaction at any temperature, while the other catalysts had the rate constants varied in the initial and the later stages. It was recognized that the temperature dependence of rate constants varies considerably according to the types of catalyst. Particularly the MoO3-TiO3 catalyst has small temperature dependence in the rate constants, and high molecular weight reducing power. 3 refs., 4 figs., 3 tabs.}
place = {Japan}
year = {1990}
month = {Nov}
}