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

✍ Scribed by Yasuhiro Takemura; Koji Ouchi

• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 536 KB
• Volume: 62
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(83)90052-2

✦ Synopsis

In a batch-autoclave, twenty coals were liquefied using a cobalt-molybdenum oxide catalyst with a mixture of CO and Hz0 at40O"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,O, such as hydrolysis.