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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
【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.
【Abstract】 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, Δ s H 0 m, and Pitzer’s parameters: β (0)L MX , β (1)L MX and C ФL MX were obtained. Then the values of apparent relative molar enthalpy ФL , and relative partial molar enthalpy of solvent and solute (EMIES), L 1 and L 2 were calculated, respectively.
【Key words】 room temperature ionic liquid; EMIES; solution enthalpy; apparent relative molar enthalpy; Pitzer’s parameter; isoperibol calorimeter;
- 【文献出处】 化学学报 ,Acta Chimica Sinica , 编辑部邮箱 ,2004年21期
- 【分类号】O646.9
- 【被引频次】13
- 【下载频次】341