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Coal liquefaction by the hydrogen produced from methanol: 2. Model compound studies

✍ Scribed by Fanor Mondragon; Ryuji Kamoshita; Takashi Katoh; Hironori Itoh; Koji Ouchi

Publisher: Elsevier Science
Year: 1984
Tongue: English
Weight: 725 KB
Volume: 63
Category: Article
ISSN: 0016-2361
DOI: 10.1016/0016-2361(84)90149-2

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✦ Synopsis

Coal can be converted into a material soluble in solvents using methanol as an in-situ hydrogen source and also as an alkylating agent. This paper presents the results of the reaction of selected model compounds with methanol using two different hydrogenation catalysts: stabilized nickel at 365X, and stabilized cobalt at 405°C and 445°C. Stabilized nickel is a much better hydrogenation catalyst than stabilized cobalt. The alkylation reaction is strongly dependent on the presence of specific functional groups (-OH, -NH, etc). Also, the alkylation reaction appears to be independent of the hydrogenation catalyst used and it seems to depend more on the temperature. The alkylated products from the reactions at 405°C showed an order as follows: carbazdle> phenol> phenanthrene>dibenzofuran> diphenylether> dibenzothiophene> diphenylmethane. A free radical mechanism is proposed for the alkylation reaction.

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