ORGANIC GEOCHEMISTRY OF ISOMETAMORPHIC COAL-CHARACTERISTICS OF NUCLEAR MAGNETIC RESONANCE (NMR)

In the paper, the NMR characteristics of vitrinites and their chloroform soluble matters from the two coal facies during the high volatile stage of bituminious coal (R_max^o≈0.64～0.74%)are approached by the techniques of CP/MAS-¹³C-NMR and 1^H-NMR. Moreover, with the basis of element analysis,separation of extracts and coal petrological characteristics,the authors have studied the vitrinite textures of the two coal facies.