288.15-318.15K温度范围内离子液体[C_5mim][Pro]水溶液的体积和表面性质  

Volume and Surface Properties of Aqueous [C_5mim][Pro] at288.15 to 318.15 K

作　　者：李驰[1] 杨宏旭[1] 刘入境[1] 杨奇[1] 佟静[1] 杨家振[1] 

机构地区：[1]辽宁大学绿色合成与先进材料制备化学辽宁省高校重点实验室,辽宁沈阳110036

出　　处：《物理化学学报》2015年第1期11-16,共6页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金(21273003);辽宁教育厅(LJQ2013001);辽宁省百千万人才(2013921029);辽宁大学创新人才培养基金项目资助~~

摘　　要：在288.15-318.15 K温度范围内,测定了不同浓度离子液体1-戊基-3-甲基咪唑丙酸盐([C5mim][Pro])水溶液的密度和表面张力,计算了不同温度下不同浓度的溶液热膨胀系数、表观摩尔体积和溶液等张比容;根据密度实验数据计算得到溶质表观膨胀率,并与Harned和Owen提供的理论方程计算结果作了比较,两者计算结果能够很好一致;另外,本文还验证了预测溶液表面张力的经验方程,用其预测溶液的表面张力,不仅与溶液表面张力实验值在误差范围内很好一致,也与用等张比容方法预测的结果一致.The density and surface tension of aqueous 1-pentyl-3-methylimidazolium propionate （[C5mim][Pro]） of various molarities were determined at 288.15 to 318.15 K, and the coefficient of thermal expansion, the apparent molar volume, and the parachor for these solutions were calculated. The values of the apparent molar expansibility of solute obtained from data of the apparent molar volume are in good agreement with the values calculated by Harned-Owen equation.The empirical equation of the parachor was used to estimate the parachor and surface tensions of the solutions. Estimated values were within the experimental error of experimental values.

关 键 词：离子液体水溶液 密度 表面张力 表观摩尔体积 等张比容 丙酸盐 

分 类 号：O645.11[理学—物理化学]