化学学报 ›› 2004, Vol. 62 ›› Issue (21): 2161-2164. 上一篇    下一篇

研究论文

室温离子液体的热化学研究 1.EMIES溶解热和Pitzer参数

谭志诚1, 张志恒2, 孙立贤1, 许维国2, 徐芬1, 杨家振2, 张涛1   

  1. 1. 中国科学院大连化学物理研究所, 大连, 116023;
    2. 辽宁大学化学院, 沈阳, 110036
  • 投稿日期:2003-11-19 修回日期:2004-04-21 发布日期:2014-02-17
  • 通讯作者: lxsun@dicp.ac.cn
  • 作者简介:孙立贤,E-mail:lxsun@dicp.ac.cn
  • 基金资助:
    国家自然科学基金(No.20073047)资助项目.

Study on Thermochemistry of Room Temperature Ionic Liquid 1. Solution Enthalpy of EMIES and Pitzer’s Parameters

TAN Zhi-Cheng1, ZHANG Zhi-Heng2, SUN Li-Xian1, XU Wei-Guo2, XU Fen1, YANG Jia-Zhen2, ZHANG Tao1   

  1. 1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023;
    2. Department of Chemistry, Liaoning University, Shenyang 110036
  • Received:2003-11-19 Revised:2004-04-21 Published:2014-02-17

在303.150 K下,利用等温溶解反应量热计测定了不同浓度硫酸乙酯-1-甲基-3-乙基咪唑(EMIES)室温离子液体在水中的摩尔溶解热(ΔsHm),根据Pitzer理论得到了EMIES的无限稀释摩尔溶解热(ΔsHm0)和Pitzer焓参数:βMX(0)LMX(1)L和CMXφL,并计算了表观相对摩尔焓和溶质、溶剂的相对偏摩尔焓.

关键词: 室温离子液体, 硫酸乙酯-1-甲基-3-乙基咪唑(EMIES), 溶解焓, 表观相对焓, Pitzer参数, 等温溶解反应量热计

Using the solution reaction isoperibol calorimeter, the molar solution enthalpies of room temperature ionic liquid, 1-ethyl-3-methylimidazolium ethyl sulfate (EMIES), with various molalities were determined at T=303.150 K in water. According to Pitzer's electrolyte solution theory, the molar solution enthalpy of EMIES at infinite dilution, ΔsHm0, and Pitzer's parameters: βMX(0)L, βMX(1)L and CMXФL were obtained. Then the values of apparent relative molar enthalpy ФL, and relative partial molar enthalpy of solvent and solute (EMIES), L1 and L2 were calculated, respectively.

Key words: room temperature ionic liquid, EMIES, solution enthalpy, apparent relative molar enthalpy, Pitzer’s parameter, isoperibol calorimeter