Catalytic liquefaction of various coals using a mixture of carbon monoxide and water

• Published in: Fuel (Guildford) Vol. 62; no. 10; pp. 1133 - 1137
• Main Authors: Takemura, Yasuhiro, Ouchi, Koji
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.01.1983; Elsevier
• Subjects: Applied sciences; carbon monoxide; coals; Energy; Exact sciences and technology; Fuel processing. Carbochemistry and petrochemistry; Fuels; liquefaction; Solid fuel processing (coal, coke, brown coal, peat, wood, etc.); carbon monoxide; liquefaction; coals; Water; Catalytic reaction; Cobalt Oxides; Liquefaction; Japan; Tungsten Oxides; Experimental study; Peat; Mixture; Lignite; Carbochemistry; Coal; Carbon monoxide; Molybdenum Oxides
• ISSN: 0016-2361; 1873-7153
• DOI: 10.1016/0016-2361(83)90052-2

In a batch-autoclave, twenty coals were liquefied using a cobalt-molybdenum oxide catalyst with a mixture of CO and H 20 at 400 °C with or without vehicle oil. Furthermore, lignite and peat were liquefied on tungsten oxide catalyst at 300 °C in the absence of CO. The reactivity of coal in this liquefaction is found to depend strongly on its rank. The vehicle oil significantly influences the extent of the water-gas shift reaction, especially when bituminous coals are liquefied, by dissolving such coals. Liquefaction of coal by this process is considered to take place via three routes: hydrogenolysis by the nascent hydrogen produced from the shift reaction; dissolution of coal into the vehicle oil which is an initial stage of hydrogenolysis; and a solvolytic reaction with H 2O, such as hydrolysis.