4.熱量測定による石炭表面と溶剤との相互作用の評価

抄録

In coal liquefaction, it is important to make clear the interactions of coal with solvent, such as solubilization and swelling. In this study, a flow microcalorimeter was utilized to measure heat of adsorption occured as the solvents flowed on the surface of coal. On the basis of heats measured and FTIR spectral measurement, the interactions of coal surface with solvent were examined. In this research, eight kinds of coal were used as samples, n-hexane as carrier liquid, methanol as polar solvent and THF, tetralin as non-polar solvent. It can be concluded that swelling of coal depends on adsorption behaviour of solvent and swelling ratio of coal can be estimated based on the heat of adsorption.