不同极性的临界介质对孔道中甲醇的脱附和萃取作用

针对临界溶剂对多孔介质中甲醇的脱附和萃取作用，利用Monte Carlo (MC)方法考察了溶剂的分子结构与外在因素（孔道尺寸）对甲醇合成过程的影响。研究表明，极性溶剂丙酮能够促进甲醇脱附，而非极性溶剂正庚烷对孔道中甲醇有更强的萃取能力。在一定范围内，随孔道尺寸的增加，溶剂对甲醇的脱附能力增加，但对孔道中甲醇的萃取能力却减弱。

Influences of critical solvents on methanol desorption and extraction from porous media

The Monte Carlo method was employed to investigate the effect of critical solvents acetone and heptane on the desorption and extraction of methanol from porous media.The effect of molecular structure of the solvents and extrinsic factors(pore size) on the methanol synthesis process were all took into account when the model was built up.The results showed that polar acetone was beneficial to the desorption of methanol,however the effect of nonpolar heptane on the extraction of methanol was more evident.The effects of the solvents on the desorption of methanol were increased with increasing of the pore size while the effects on the extraction of methanol in the pores were decreased with increasing of the pore size.