Extractions and reactions of coals below 100 °C: 2. Reactions of the toluene-insoluble, pyridine-soluble fraction of Illinois No. 6 coal

✍ Scribed by Frank R. Mayo; David H. Buchanan; Lee A. Pavelka; Albert S. Hirschon

• Publisher: Elsevier Science
• Year: 1988
• Tongue: English
• Weight: 765 KB
• Volume: 67
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(88)90286-4

✦ Synopsis

The toluene-insoluble, pyridine-soluble (TIPS) fractions of an Illinois No. 6 coal were investigated as a model for the insoluble portion of coal. Various TIPS fractions had number-average molecular weights (iii,) in pyridine of 9080 to 1380. These fractions were treated with a variety of reagents known to cleave ester and ether bonds. The abilities of these reagents were measured by decrease in h?, of the TIPS products. The order was found to be: ZnCl, > LiI H,O > pyridine HI > benzylamine > alcoholic KOH > toluene sulphonic acid. Ester groups were determined from saponification equivalents and the effects of alcoholic KOH. Evidence for ethers came from effects of amines, HI and sodium on the A?,. HI appears to cleave more bonds and more phenyl alkyl and benzyl ether than dialkyl ether bonds.