Semi-quantitative oxygen functional group distribution in two coal types

✍ Scribed by D.V. Franco; J.M. Gelan; H.J. Martens; D.J.-M. Vanderzande

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 513 KB
• Volume: 71
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(92)90153-f

✦ Synopsis

The concentration of different oxygen-containing groups (-OH, COOH, Ar-0-Ar, Ar-0-CH,, R-HO-R) in two different coal types (a brown coal and a flame coal) are described by combined use of quantitative 13C CP/MAS n.m.r. spectroscopy and several labelling reactions (acetylation, silylation, methylation). The effect of trimethylsilyl ether formation on relaxation times was also examined.