Diffusion of Solvents in Coals: 1. Measurement of Diffusion coefficients of pyridine in Elbistan Lignite

摘要

The aim of the present report is to measure the diffusion coefficients at temperatures about 20-27deg.C, the activation energies of diffusion, and to determine the type of transport mechanism of diffusion of pyridine in macromolecular structure of Turkish Elbistan lignite (C: 53.0 wt /100, dmmf). The raw coal sample was demineralized with HCI and HF by standard methods. The raw and demineralized coal samples were extracted with pyridine.