Effects of in-situ mineral matter and a nickel — molybdenum catalyst on hydrogenation of Liddell coal

✍ Scribed by Horst Rottendorf; Michael A. Wilson

• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 645 KB
• Volume: 59
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(80)90162-3

✦ Synopsis

Hydrogenation experiments with batch autoclaves were performed on an Australian Permian bituminous coal (Liddell) using excess of tetralin (3 tetralin: 1 coal by weight) as vehicle. They show that the nickel-molybdenum catalyst, Cyanamid Aero HDS3A, has only a mild effect on the conversion of Liddell coal and that this is also the case when the coal is passed through a magnetic separator and then extracted with hydrochloric and hydrofluoric acids before hydrogenation to remove minerals. Replacing the hydrogen consumed during reaction does not significantly affect the yield of conversion. Evidence is presented to show that major roles of the catalyst during conversion are to assist in dissolution of the coal by rehydrogenating the donor vehicle after dehydrogenation by the coal, and to convert the initial tetralin-soluble products of hydrogenation to oil. In the absence of catalyst, prior treatment of the coal by the separation and acid extraction procedures mentioned above, likewise has little effect on conversion.

T.cz