Preparation and Characterization of Perfluorosulfonic Acid Nanofiber Membranes for Pervaporation-Assisted Esterification

被引：21

作者：

Lu, Pei-Pei ^{[1
]}

Xu, Zhen-Liang ^{[1
]}

Ma, Xiao-Hua ^{[1
]}

Cao, Yue ^{[1
]}

机构：

[1] E China Univ Sci & Technol, State Key Lab Chem Engn Membrane Sci & Engn, R&D Lab, Chem Engn Res Ctr, Shanghai 200237, Peoples R China

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2013年 / 52卷 / 24期

基金：

中国国家自然科学基金;

关键词：

SOLUTION DIFFUSION-MODEL; MIXED MATRIX MEMBRANES; COMPOSITE MEMBRANES; ACETIC-ACID; ETHANOL; REACTOR; DEHYDRATION; PERFORMANCE;

D O I：

10.1021/ie400065e

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Multi layer membranes were prepared by the combination of perfluorosulfonic acid/SiO2 nanofibers and a poly(vinyl alcohol) (PVA) pervaporation layer and were used to enhance the esterification of acetic acid (HAc) and ethanol (EtOH). The esterification-pervaporation experiments were carried out in a continuous membrane contactor. The effects of the temperature, the ratio of HAc to EtOH, and the ratio of membrane area to reaction volume were investigated. The results demonstrated that the membranes had good catalytic activities even at low temperature because of the nanofibrous structure of the catalysis layer. The conversion of HAc at 60 degrees C after 10 h was 10-15% more than the equilibrium conversion and by improved about 45% with respect to the equilibrium conversion after 55 h. The yield of EtAc was higher than 90%, which demonstrates that the difunctional membrane could enhance the esterification process greatly through the in situ removal of water.

引用

页码：8149 / 8156

页数：8

共 27 条

[1] Aluminum-rich zeolite beta incorporated sodium alginate mixed matrix membranes for pervaporation dehydration and esterification of ethanol and acetic acid [J].