High-pressure solubilities of carbon dioxide in ionic liquids: 1-Alkyl-3-methylimidazolium bis (trifluoromethylsulfonyl)imide

被引：163

作者：

Shin, Eun-Kyoung ^{[1
]}

Lee, Byung-Chul ^{[1
]}

Lim, Jong Sung ^{[2
]}

机构：

[1] Hannam Univ, Dept Chem Engn & Nanobio Technol, Taejon 305811, South Korea

[2] Sogang Univ, Dept Chem & Biomol Engn, Seoul 100611, South Korea

来源：

JOURNAL OF SUPERCRITICAL FLUIDS | 2008年 / 45卷 / 03期

基金：

新加坡国家研究基金会;

关键词：

solubility; ionic liquid; carbon dioxide; 1-alkyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide; Peng-Robinson equation of state;

D O I：

10.1016/j.supflu.2008.01.020

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Solubility data of carbon dioxide (CO2) in the ionic liquids 1-alkyl-3-methytimidazolium bis(trifluoromethylsulfonyl)imide ([C-n-mm][Tf2N], n = 2, 4, 6, 8) are presented at pressures up to about 45 MPa and at temperatures between 25 and 70 degrees C. The equilibrium pressure increased very steeply at high CO2 compositions. The increase in the alkyl chain length on the cation of the ionic liquids increased the CO2 solubility. The experimental data for the CO2 + ionic liquid systems were correlated using the Peng-Robinson equation of state. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：282 / 292

页数：11

共 21 条

[1] High-pressure phase behavior of carbon dioxide with imidazolium-based ionic liquids [J].

Aki, SNVK ;

Mellein, BR ;

Saurer, EM ;

Brennecke, JF .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (52) :20355-20365

[2]

Anthony JL, 2005, J PHYS CHEM B, V109, P6366, DOI [10.1021/jp046404l, 10.1021/jp0464041]

[3] High-pressure phase behavior of ionic liquid/CO2 systems [J].

Blanchard, LA ;

Gu, ZY ;

Brennecke, JF .

JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (12) :2437-2444

[4] Recovery of organic products from ionic liquids using supercritical carbon dioxide [J].

Blanchard, LA ;

Brennecke, JF .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2001, 40 (01) :287-292

[5] Green processing using ionic liquids and CO2 [J].

Blanchard, LA ;

Hancu, D ;

Beckman, EJ ;

Brennecke, JF .

NATURE, 1999, 399 (6731) :28-29

[6] Ionic liquids: Innovative fluids for chemical processing [J].

Brennecke, JF ;

Maginn, EJ .

AICHE JOURNAL, 2001, 47 (11) :2384-2389

[7] Why is CO2 so soluble in imidazolium-based ionic liquids? [J].

Cadena, C ;

Anthony, JL ;

Shah, JK ;

Morrow, TI ;

Brennecke, JF ;

Maginn, EJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (16) :5300-5308

[8] High-pressure phase Behavior of systems with ionic liquids: Part IV. Binary system carbon dioxide+1-hexyl-3-methylimidazolium tetrafluoroborate [J].

Costantini, M ;

Toussaint, VA ;

Shariati, A ;

Peters, CJ ;

Kikic, I .

JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2005, 50 (01) :52-55

[9] Practical approaches to green solvents [J].

DeSimone, JM .

SCIENCE, 2002, 297 (5582) :799-803

[10]

Dzyuba SV, 2002, CHEMPHYSCHEM, V3, P161, DOI 10.1002/1439-7641(20020215)3:2<161::AID-CPHC161>3.0.CO

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