Molecular Models of Coal's Organic Matter and the Reflectance of the Macerals: A Review

摘要

The mean reflectance R_(o,n) of vitrinite and other macerals in coal whose structure is represented by molecular chemical models may be calculated on the basis of the contributions of structural-chemical groups to the molecular refraction, if the relation between the reflection, refraction, and absorption is taken into account on the basis of the Fresnel-Beer law. The findings confirm the relation between the reflectance R_(o,n) and the chemical structure of the coal macerals. Consequently, reliable analysis of the possible chemical transformations in coal may be based on molecular models of the structure.