Characterization of the heavy products of coal pyrolysis

✍ Scribed by George R. Gavalas; Mitsuo Oka

• Publisher: Elsevier Science
• Year: 1978
• Tongue: English
• Weight: 477 KB
• Volume: 57
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(78)90005-4

✦ Synopsis

In order to obtain information about the production mechanism of large molecules in coal pyrolysis, a subbituminous and two bituminous coals were heated at 5OO'C for 30 s under vacuum. The heavy products were dissolved in tetrahydrofuran (THF) and analysed by 'H n.m.r. spectroscopy and gelpermeation chromatography in an atmospheric-pressure column. Parallel GPC, 'H n.m.r. and 13C n.m.r. studies were conducted with THF extracts of the same coals. The results are combined with elemental analysis data to obtain structural parameters of the extracts and pyrolysates.