文献类型：期刊文献

英文题名：Liquid-liquid coexistence curves of { x 1-butyl-3-methylimidazolium tetrafluoroborate + (1-x) 1,3-propanediol} and { x 1-butyl-3-methylimidazolium tetrafluoroborate + (1-x) 1,4-butanediol}

作者：Lv, Hekun[1]; Guo, Yimin[1]; An, Xueqin[2,3]; Shen, Weiguo[1,2]

机构：[1] Department of Chemistry, Lanzhou University, Lanzhou 730000, China; [2] School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China; [3] Jiangsu Key Laboratory of Biofunctional Materials, Nanjing Normal University, Nanjing 210097, China

年份：2010

卷号：55

期号：7

起止页码：2482

外文期刊名：Journal of Chemical and Engineering Data

收录：EI(收录号：20102813075576)

语种：英文

外文关键词：Liquids - Temperature distribution

摘要：The liquid-liquid coexistence curves of the binary solutions of 1-butyl-3-methylimidazolium tetrafluoroborate ([C4mim][BF 4]) + 1,3-propanediol and [C4mim][BF4] + 1,4-butanediol were determined by measuring the temperature dependence of the refractive index in the two phases of the samples with critical compositions. The critical amplitude B and the critical exponent β have been deduced from the coexistence curves. The experimental values of β are consistent with theoretical prediction. The results have also been analyzed to determine the Wegner-correction terms and to examine the asymmetric behavior of the diameters of the coexistence curves. ? 2009 American Chemical Society.