Sorption Mechanism of Various Organic Vapors to Coals

摘要

Sorplion of organic vapors into various ranks of coals was investigated to clarify coal-solvent interaction, sorption mechanism, and micropore and cross-linking structure of coals. Especially, the sorption at low vapor pressures was measured under temperature- and pressure-controlled gravimetric sorption system. Methanol sorption isotherm for all ranks of coals could be explained by the dual-sorption model, i.e., a physical adsorption described by a Langmuir isotherm and a dissolution into bulk of coals described by Henry's law. The adsorption mechanism by a BET equation did not fit the sorption data.