室温离子液体的热化学研究 1.EMIES溶解热和Pitzer参数  

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

作　　者：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] 

机构地区：[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

出　　处：《化学学报》2004年第21期2161-2164,共4页Acta Chimica Sinica

基　　金：国家自然科学基金(No.20073047)资助项目

摘　　要：在303.150K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(ΔsH0m)和Pitzer焓参数β(0)LMX,β(1)LMX和CФLMX,并计算了表观相对摩尔焓和溶质、溶剂的相对偏摩尔焓.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, Delta(s)H(m)(0), and Pitzer's parameters: beta(MX)((0)L), beta(MX)((1)L) and C-MX(phiL) were obtained. Then the values of apparent relative molar enthalpy L-phi, and relative partial molar enthalpy of solvent and solute (EMIES), (L) over bar (1) and (L) over bar (2) were calculated, respectively.

关 键 词：室温离子液体 硫酸乙酯-1-甲基-3-乙基咪唑 等温溶解反应量热计 摩尔溶解热 表观相对焓 容解焓 合成 PITZER方程 

分 类 号：O646.9[理学—物理化学]