UNIFAC法研究甲烷气体溶解度

用自建的一套设备测定了甲烷在异丙醇、丙酮、四氢呋喃、环己酮及乙酸甲酯中的高压溶解度。采用UNIFAC法对自测及文献中甲烷在极性纯溶剂中的溶解度数据进行了关联和估算,定义了新基团,并回归出了基团间的交互作用能量参数。结果表明,用文中得到的参数估算甲烷在相关溶剂中的溶解度数据结果良好。

Study on the solubility of methane by UNIFAC model

The solubility data of methane in 2-propanol, acetone, tetrahydrofuran, cyclohexanone and methyl acetate at high pressures were measured separately by a set of self-made equipment, and the UNIFAC group contribution method was used to correlate and estimate the solubility of methane in polar solvents. New groups were defined, and the interaction-energyparameters of these groups with methane were regressed with the experimental data and other related data in literatures. It shows that the UNIFAC model coupled with the interaction-energy parameters can be used to estimate the solubility of methane in the related solvent accurately.