✦ LIBER ✦

Effect of air oxidation on coal hydrogenation

✍ Scribed by Koji Ouchi; Yozo Maeda; Hironori Itoh; Masataka Makabe

Publisher: Elsevier Science
Year: 1984
Tongue: English
Weight: 419 KB
Volume: 63
Category: Article
ISSN: 0016-2361
DOI: 10.1016/0016-2361(84)90251-5

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✦ Synopsis

JapaneseTaiheiyocoal

(75.9%C) wasoxidizedwithairat250"Cfor3-40handat300"Cfor3-10 h.The weightdecreasedfrom 16.3 to46.5%at 250Candfrom21.7 to41.3%at300"C. Carbon lossandyieldof NaOH soluble were obtained. The resultant oxidation products were hydrogenated at 370°C for 1 h under 10 MPa hydrogen pressure using red mud with sulphur as catalyst and wash oil as solvent. Conversion to pyridine, benzene and n-hexane soluble fraction shows a minimum for the coal oxidized 10 h at 250°C and for the coal oxidized for 3 h at 300X. Initial oxidation makes a network structure which contributes to a reduction in conversion, but in later stages of oxidation, splitting of bridge linkages and/or ring opening of aromatic structures, contribute to increases in conversion.

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