The calculation of the thermodynamic functions of the hydrocarbon composition of the light fraction of primary coal tar with the boiling point 175 ºC

Abstract

The calculation of the thermodynamic functions of the hydrocarbon composition of primary coal tar fractions with the boiling point 175 ºC is given in this article. Quantitative data of the elemental composition of primary coal tar fractions were used. The presence of hydroxyl and carboxyl groups (COOH, OH) in the primary coal tar fractions has been determined by means of acetate method and neutralization with alkalis. It is shown that dephenolized fraction obtained from hydrogenation product of primary coal tar fractions with boiling point 175 ºC is an effective donor and a hydrogen carrier. This fraction also is capable to inhibit polymerization processes, stabilizing the radicals formed as a result of hydrogenation processes.