DICP OpenIR
学科主题物理化学
Solubilities of the Gaseous and Liquid Solutes in the Ionic Liquids at Infinite Dilution by Gas Chromatography
Yan PF(颜佩芳); Liu XM(刘秀梅); Wang C(王畅); Yang M(杨淼); Tan ZC(谭志诚); UrsWelz-Biermann; Urs Welz-Biermann
会议名称2nd Asia Pacific Conference on Ionic Liquids and Green Processes
会议日期2010-9-07
2010-09-07
会议地点中国
页码260/2
部门归属二室
主办者中国科学院大连化学物理研究所
英文摘要Research of ionic liquids (ILs) is one of the most rapidly growing fields in the past years, much of which has the ultimate aim of large scale industrial application [1]. Due to their unique properties such as negligible vapor pressure at room temperature, stable liquid phase over a wide temperature range and stability at high temperatures, ionic liquids created interest to use them in the separations of gas mixtures and extraction processes. So, it is very important to know the solubility of the gases and liquid solutes in the IL phase. Gas chromatography has been considered to be a particularly convenient technique for the determination of the solubility of gases in nonvolatile liquids based on Henry’s law constants for a certain range of temperatures. Activity coefficients at infinite dilution of a solute i (γi∞) can be used to quantify the volatility of the solute as well as to provide information on the intermolecular energy between solvent and solute [2,3]. Values of γi∞ are also important for evaluating the potential uses of ILs in liquid-liquid extraction and extractive distillation. In our work, The activity coefficients at infinite dilution, γi∞, for both polar and non-polar liquid solutes in the ionic liquid 1-hydroxyethyl-3-methylimidazolium hexafluorophosphate ([HOEMIM][PF6]) and 1-hydroxyethyl-3-methylimidazolium perfluorobutanesulfonate ([HOEMIM][CF3(CF2)3SO3]) have been determined by gas-liquid chromatography at different temperatures (from 303 K to 353 K). And the solubilities of O2 and CO2 in the ionic liquids: [HOEMIM][PF6], [HOEMIM][CF3(CF2)3SO3], 1-ethyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate [EMIM][FAP], 1-ethyl-3-methylimidazolium tetracyanoborate [EMIM][TCB], 1-butyl-3-methylimidazolium bis(oxalato)borate [BMIM][BOB], 1-hexyl-3-methyl-imidazolium bis(oxalato)borate [HMIM][BOB], N-alkylpyridinium bis(trifluoromethylsulfonyl)imide ([CnPY][NTf2], n = 2, 4, 5) and [N1123][RNHC3SO3] (R= H, Bu) were studied by gas chromatography at T = 303K, 313K and 323K. The partial molar excess enthalpies at infinite dilution HiE,∞ of the liquid solutes in the ionic liquids [HOEMIM][PF6] and [HOEMIM][CF3(CF2)3SO3] were also calculated from the temperature dependence of the γi∞ values. The selectivities for the hexane/benzene and cyclohexane/benzene separation problems were calculated from experimental infinite dilution activity coefficient values and compared to the other ionic liquids, taken from the recent literature.
语种中文
文献类型会议论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/114274
专题中国科学院大连化学物理研究所
通讯作者Urs Welz-Biermann
推荐引用方式
GB/T 7714
Yan PF,Liu XM,Wang C,et al. Solubilities of the Gaseous and Liquid Solutes in the Ionic Liquids at Infinite Dilution by Gas Chromatography[C],2010:260/2.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[颜佩芳]的文章
[刘秀梅]的文章
[王畅]的文章
百度学术
百度学术中相似的文章
[颜佩芳]的文章
[刘秀梅]的文章
[王畅]的文章
必应学术
必应学术中相似的文章
[颜佩芳]的文章
[刘秀梅]的文章
[王畅]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。