Solubility of carbon dioxide in imidazolium-based ionic liquids with a methanesulfonate anion
Solubility of carbon dioxide in imidazolium-based ionic liquids with a methanesulfonate anion
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DOI：
10.1021/je3001377
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发表时间：
2012-11
影响因子：
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通讯作者：
Y. Jung;Jun-Young Jung;Yusuke Jin;Byung-chul Lee;I. Baek;S. H. Kim
中科院分区：
文献类型：
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作者：
Y. Jung;Jun-Young Jung;Yusuke Jin;Byung-chul Lee;I. Baek;S. H. Kim
对于具有甲磺酸阴离子的无卤化物咪唑基离子液体，二氧化碳（CO2）的溶解度结果在压力高达约45 MPa，温度范围为303.15 K至343.15 K。溶解度的测定是通过测量二氧化碳和离子液体混合物的气泡压力来实现的。本文研究的离子液体为1,3-二丁基咪唑甲磺酸盐、1-乙基-3-甲基咪唑甲磺酸盐、1-丁基-3-甲基咪唑甲磺酸盐和1,3-二甲基咪唑甲磺酸盐。在二氧化碳含量高的情况下，平衡压力急剧增加。在离子液体中，CO2溶解度随着离子液体中与咪唑相连接的烷基链总长度的增加而升高，且这种增加在高压下更为明显。具有甲磺酸阴离子的离子液体的CO2溶解度低于…
For the halide-free imidazolium-based ionic liquids with a methanesulfonate anion, the solubility results of carbon dioxide (CO2) are presented at pressures up to approximately 45 MPa and temperatures ranging from 303.15 K to 343.15 K. The solubility was determined by measuring bubble pressures of mixtures of CO2 and ionic liquid using a high-pressure equilibrium apparatus equipped with a variable-volume view cell. The ionic liquids studied in this work were 1,3-dibutylimidazolium methanesulfonate, 1-ethyl-3-methylimidazolium methanesulfonate, 1-butyl-3-methylimidazolium methanesulfonate, and 1,3-dimethylimidazolium methanesulfonate. A sharp increase of equilibrium pressure was observed at high CO2 compositions. In ionic liquids, the CO2 solubility was elevated according to the increase of the total length of alkyl chains linked to the imidazole of the ionic liquids, and this increase became more apparent at higher pressures. The ionic liquids with a methanesulfonate anion gave a lower CO2 solubility than...