渗透汽化膜分离酯化反应的研究

Study on the esterification reaction coupled with pervaporation membrane separation

以乙酸和正丁醇的酯化为探针反应，以多元酸交联的ＰＶＡ／ＰＳＡ复合膜为分离膜，对渗透汽化膜分离酯化反应进行了研究，考察了该复合膜的分离性能及其对酯化反应转化率的影响．结果表明，本文研制的复合膜能选择性地将反应中生成的水连续除去，从而使反应转化率显著提高．另外，用ＳＥＭ的方法对研制的复合膜的结构进行了观察．

The esterification of acetic acid with n butanol coupled with pervaporation was studied. The effects of the crosslinked composite membrane (PVA/PSA) separation properties on the conversion were investigated. The results show that the membrane has high selectivity and permeability. The conversion of n butyl acetate exceeds the equilibrium yield due to the membrane selectively removing products, mainly water, from the reaction mixture.