Permeability and selectivity of acid gases in supported conventional and novel imidazolium-based ionic liquid membranes

被引：51

作者：

Akhmetshina, Alsu I. ^{[1
,2
]}

Gumerova, Olesya R. ^{[1
]}

Atlaskin, Artem A. ^{[1
]}

Petukhov, Anton N. ^{[1
]}

Sazanova, Tatyana S. ^{[1
]}

Yanbikov, Nail R. ^{[1
]}

Nyuchev, Alexander V. ^{[3
]}

Razov, Evgeny N. ^{[4
]}

Vorotyntsev, Ilya V. ^{[1
]}

机构：

[1] Nizhnii Novgorod State Tech Univ, Inst Physicochem Technol & Mat Sci, Nanotechnol & Biotechnol Dept, Nizhnii Novgorod 603950, Russia

[2] Kazan Natl Res Technol Univ, 68 Karl Marks Str, Kazan 420015, Republic Of Tat, Russia

[3] NI Lobachevsky State Univ Nizhny Novgorod, Dept Chem, 23 Gagarin Ave, Nizhnii Novgorod 603950, Russia

[4] Russian Acad Sci, Inst Problems Mech Engn, 85 Belinskogo Str, Nizhnii Novgorod 603024, Russia

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2017年 / 176卷

基金：

俄罗斯科学基金会;

关键词：

Supported ionic liquid membrane; Hydrogen sulfide; Carbon dioxide; Free surface energy; Contact angle; Wettability; Ionic liquid; Surface roughness; Capillary pressure; Gas separation; Stability; CARBON-DIOXIDE; CO2; CAPTURE; PHASE-BEHAVIOR; CONTACT ANGLES; SEPARATION; TEMPERATURE; SOLUBILITY; ACETATE; ANION; PLUS;

D O I：

10.1016/j.seppur.2016.11.074

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The novel imidazolium salts based on bis(2-ethylhexyl) sulfosuccinate anion have been developed as ionic liquids (ILs) which can potentially be used as absorbents of acid gases. The transport of CO2, H2S, CH4 and N-2 in a series of supported ionic liquid membranes (SILMs) with immobilized conventional (bmim[PF6], bmim[BF4], bmim[Tf2N]) and novel ILs was investigated. The supported ionic liquid membrane containing 1-butyl-3-methylimidazolium bis(2-ethylhexyl) sulfosuccinate (bmim[doc]) yielded a very high H2S solubility and, hence, H2S/N-2 selectivity equal to 65. However, the permeability of acid gases through such a membrane had relatively low values varying in a range of 100-200 Barrer, whereas permeability for SILMs impregnated by conventional ILs achieved 565 Barrer. The most effective separation of CO2 was observed for SILMs impregnated by bmim[BF4] predominantly owing to solubility component of permeability. In order to estimate the stability of SILMs, the polymeric support surface properties such as free surface energy, surface topology and roughness parameters were evaluated. Analysis of experimental data revealed that among the tested ILs, bmim[BF4] immobilized in porous polymeric support was more resistant to losses and determined the higher stability of membranes. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：92 / 106

页数：15

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