Experimental investigation of the permeability and selectivity of supported ionic liquid membranes for CO2/He separation at temperatures up to 125°C

被引：137

作者：

Ilconich, Jeffery

Myers, Christina

Pennline, Henry

Luebke, David

机构：

[1] Natl Energy Technol Lab, South Pk, PA 15129 USA

[2] RDS, Parsons, South Pk, PA 15129 USA

来源：

JOURNAL OF MEMBRANE SCIENCE | 2007年 / 298卷 / 1-2期

关键词：

carbon dioxide; ionic liquid; membranes; diffusivity; temperature dependence;

D O I：

10.1016/j.memsci.2007.03.056

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Supported liquid membranes have been prepared by impregnation of commercial porous polymer films with the ionic liquid 1-n-hexyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide. The ionic liquid has been characterized, and the membranes have been tested to determine performance in the selective separation of CO2 from He. Experiments were conducted in a constant pressure system, and pure gas permeability/selectivity data are reported. Membranes prepared with polysulfone supports have been found to be stable to 125 degrees C. The CO2 permeability of the membranes increases from 744 to 1200 barter as the temperature increases from 37 to 125 degrees C. The CO2/He selectivity decreased from 8.7 to 3.1 over the same temperature range. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：41 / 47

页数：7

共 30 条

[21] Gas separations using non-hexafluorophosphate [PF6]- anion supported ionic liquid membranes [J].