Separation of dimethyl carbonate/methanol mixtures by pervaporation with poly(acrylic acid)/poly(vinyl alcohol) blend membranes

被引：82

作者：

Wang, Luying ^{[1
]}

Li, Jiding ^{[1
]}

Lin, Yangzheng ^{[1
]}

Chen, Cuixian ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Chem Engn, Beijing 100084, Peoples R China

来源：

JOURNAL OF MEMBRANE SCIENCE | 2007年 / 305卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

pervaporation; PAA/PVA blend membranes; DMC/MeOH mixtures;

D O I：

10.1016/j.memsci.2007.08.008

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A serial of poly(acrylic acid) (PAA)/poly(vinyl alcohol) (PVA) blend membranes with different PAA/PVA ratio were prepared for separating dimethyl carbonate (DMC)/methanol (MeOH) mixtures by pervaporation. FTIR was used to determine whether there was an esterification reaction between PAA and PVA. Swelling experiments were carried out in DMC/MeOH mixtures by using different blend membranes to investigate the swelling behavior of the membranes. The blend membranes with different PAA content were used to separate DMC/MeOH azeotrope through pervaporation experiments. The effects of operation temperatures and feed composition on pervaporation performances were also investigated. The results showed that the blend membrane containing 70 wt.% PAA had a highest separation factor of 13 and a permeate flux of 577 g/(m(2) h) at 60 degrees C for separating DMC/MeOH azeotrope, which could be expected that the membrane prepared in this work should be used to separate DMC/MeOH mixtures in real application. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：238 / 246

页数：9

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