95/04321 Measurement of -OH groups in coals of different rank using microwave methodology, and the development of quantitative solid state n.m.r. methods for in situ analysis

Measurement of -OH groups in coals of di

Measurement of -OH groups in coals of different rank using microwave methodology, and the development of quantitative solid state n.m.r. methods for in situ analysis

✍ Parisa Monsef-Mirzai; William R. McWhinnie; Michael C. Perry; Paul Burchill 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 1012 KB

Experiments with both model compounds (substituted phenols) and with 11 coals (nine British and two American) have established that microwave heating will greatly accelerate silylation reactions of the phenolic -OH groups, e.g. for Creswell coal complete silylation of -OH groups occurs in 35 min in