Measurements of activity coefficients at infinite dilution of organic solutes in the ionic liquid 1-ethyl-3-methylimidazolium ethylphosphonate [EMIM][(EtO)(H)PO2] using gas-liquid chromatography

被引：20
|
作者：
Allal, Farida [1 ]
Mutelet, Fabrice [2 ]
Dahmani, Abdellah [3 ]
Saidat, Boubakeur [1 ]
机构：
[1] Laghouat Univ, Lab Physicochim Mat, POB 32G, Laghouat 03000, Algeria
[2] Univ Lorraine, Ecole Natl Super Ind Chim, Lab React & Genie Proc, UMR CNRS 7274, 1 Rue Grandville, F-54000 Nancy, France
[3] USTHB, Fac Chim, Lab Thermodynam & Modelisat Mol, BP 32 El Alia, Algiers, Algeria
来源：
JOURNAL OF MOLECULAR LIQUIDS | 2016年 / 220卷
关键词：
Activity coefficient at infinite dilution; Ethylphosphonate based ionic liquids; (Gas plus liquid) chromatography; Separation; Selectivity; LSER model; 2ND VIRIAL-COEFFICIENTS; ALKYL SIDE-CHAINS; PARTITION-COEFFICIENTS; DESULFURIZATION; WATER; DENITROGENATION; IMIDAZOLIUM; EXTRACTION; SEPARATION; THIOPHENE;
D O I：
10.1016/j.molliq.2016.04.061
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：
Activity coefficients at infinite dilution gamma(infinity)(12) and gas-liquid partition coefficients K-L of selected hydrocarbons, alcohols, haloalkanes, nitrogen and sulfur containing compounds in the ionic liquid 1-ethyl-3-methylimidazolium ethylphosphonate [EMIM][(EtO)(H)PO2] were determined by inverse gas chromatography at five temperatures within the range (323.15 to 363.15) K. Retention data were used to calculate the selectivity and capacity for four separation problems hexane/benzene, hexane/thiophene, hexane/pyridine and cyclohexane/benzene. The selectivity values of 1-ethyl-3-methylimidazolium ethylphosphonate investigated in this study are greater than those obtained with sulfolane and N-methyl-2-pyrrolidone (NMP). These results indicate the potential use of the IL in extractive separation processes. (C) 2016 Elsevier B.V. All rights reserved.
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页码：243 / 247
页数：5
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