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Depolymerization of Yallourn brown coal: 1. Reduction of molecular weight with repeated reaction

✍ Scribed by Koji Ouchi; Yoshiyuki Yokoyama; Takashi Katoh; Hironori Itoh

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
280 KB
Volume
66
Category
Article
ISSN
0016-2361

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✦ Synopsis

Yallourn

(Australian) brown coal (66.6 wt% C) was depolymerized three times in phenol, using p-toluenesulphonic acid as catalyst. After each reaction the product was extracted with pyridine. The pyridine extracts were then methylated and fractionated by g.p.c. to obtain the molecular weight distribution.

The yield of lower molecular weight material increased with advancing reaction.

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