Separation properties of supported ionic liquid-polydimethylsiloxane membrane in pervaporation process

被引：48

作者：

Izak, P. ^{[1
,2
]}

Friess, K. ^{[3
]}

Hynek, V. ^{[3
]}

Ruth, W. ^{[1
]}

Fei, Z. ^{[4
]}

Dyson, J. P. ^{[4
]}

Kragl, U. ^{[1
]}

机构：

[1] Univ Rostock, Inst Chem, D-18059 Rostock, Germany

[2] Acad Sci Czech Republ, Inst Chem Proc Fundamentals, CR-16502 Prague 6, Czech Republic

[3] Inst Chem Technol, Prague 16000 6, Czech Republic

[4] Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol, Inst Chem Sci & Engn, CH-1015 Lausanne, Switzerland

来源：

DESALINATION | 2009年 / 241卷 / 1-3期

关键词：

Ionic liquid; Diffusion coefficient; Sorption isotherm; Pervaporation; EXTRACTION; VAPORS; WATER; ACID;

D O I：

10.1016/j.desal.2007.12.050

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Pervaporation separation properties of water-butan-l-of binary mixtures were measured with the use of three supported liquid membranes at 37 C, namely PDMS, 1-ethenyl-3-ethyl-imidazolium hexafluorophosphate-PDMS, and tetrapropyl-ammonium tetracyanoborate-PDMS membranes. An ultrafiltration ceramic module from TiO2 with 60 nm pore size was used as a support. The diffusion coefficients of butan-1-ol in IL-PDMS were much higher than in PDMS only. However, the sorption isotherms were identical for all three measured membranes. Higher permeation flux and enrichment factors of butan-l-of in IL-PDMS membrane were probably caused by higher diffusion coefficient. The supported ionic liquid membranes were stable during all measurements.

引用

页码：182 / 187

页数：6

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