Enhanced CO2 separation selectivity in oligo(ethylene glycol) functionalized room-temperature ionic liquids

被引：219

作者：

Bara, Jason E. ^{[1
]}

Gabriel, Christopher J.

Lessmann, Sonja

Carlisle, Trevor K.

Finotello, Alexia

Gin, Douglas L.

Noble, Richard D.

机构：

[1] Univ Colorado, Dept Chem & Biol Engn, Boulder, CO 80309 USA

[2] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2007年 / 46卷 / 16期

关键词：

D O I：

10.1021/ie070437g

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Novel imidazolium-based room-temperature ionic liquids (RTILs) with one, two, or three oligo(ethylene glycol) substituents were synthesized. Solubilities and ideal solubility selectivities of CO2, N-2, and CH4 at low pressure (1 atm) in these RTILs were determined using a pressure decay technique. Comparison to corresponding alkyl analogues of these RTILs reveals similar levels of CO2 solubility but lower solubilities of N-2 and CH4. As a consequence, RTILs with oligo(ethylene glycol) substituents were observed to have 30-75% higher ideal solubility selectivities for CO2/N-2 and CO2/CH4.

引用

页码：5380 / 5386

页数：7

共 47 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] Polyphosphazenes bearing branched and linear oligoethyleneoxy side groups as solid solvents for ionic conduction [J].

Allcock, HR ;

OConnor, SJM ;

Olmeijer, DL ;

Napierala, ME ;

Cameron, CG .

MACROMOLECULES, 1996, 29 (23) :7544-7552

[3]

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

[4] Examination of the potential of ionic liquids for gas separations [J].

Baltus, RE ;

Counce, RM ;

Culbertson, BH ;

Luo, HM ;

DePaoli, DW ;

Dai, S ;

Duckworth, DC .

SEPARATION SCIENCE AND TECHNOLOGY, 2005, 40 (1-3) :525-541

[5] Low-pressure solubility of carbon dioxide in room-temperature ionic liquids measured with a quartz crystal microbalance [J].

Baltus, RE ;

Culbertson, BH ;

Dai, S ;

Luo, HM ;

DePaoli, DW .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (02) :721-727

[6] CO2 capture by a task-specific ionic liquid [J].

Bates, ED ;

Mayton, RD ;

Ntai, I ;

Davis, JH .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (06) :926-927

[7] Hydrophobic, highly conductive ambient-temperature molten salts [J].

Bonhote, P ;

Dias, AP ;

Papageorgiou, N ;

Kalyanasundaram, K ;

Gratzel, M .

INORGANIC CHEMISTRY, 1996, 35 (05) :1168-1178

[8] 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

[9] Low pressure hydrocarbon solubility in room temperature ionic liquids containing imidazolium rings interpreted using regular solution theory [J].

Camper, D ;

Becker, C ;

Koval, C ;

Noble, R .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2005, 44 (06) :1928-1933

[10] Gas solubilities in room-temperature ionic liquids [J].

Camper, D ;

Scovazzo, P ;

Koval, C ;

Noble, R .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2004, 43 (12) :3049-3054

← 1 2 3 4 5 →