物理化学学报
物理化學學報
물이화학학보
ACTA PHYSICO-CHIMICA SINICA
2015年
1期
11-16
,共6页
李驰%杨宏旭%刘入境%杨奇%佟静%杨家振
李馳%楊宏旭%劉入境%楊奇%佟靜%楊傢振
리치%양굉욱%류입경%양기%동정%양가진
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
離子液體水溶液%密度%錶麵張力%錶觀摩爾體積%等張比容%丙痠鹽
리자액체수용액%밀도%표면장력%표관마이체적%등장비용%병산염
Aqueous ionic liquid%Density%Surface tension%Apparent molar volume%Parachor%Propionate
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.
在288.15-318.15 K溫度範圍內,測定瞭不同濃度離子液體1-戊基-3-甲基咪唑丙痠鹽([C5mim][Pro])水溶液的密度和錶麵張力,計算瞭不同溫度下不同濃度的溶液熱膨脹繫數、錶觀摩爾體積和溶液等張比容;根據密度實驗數據計算得到溶質錶觀膨脹率,併與Harned和Owen提供的理論方程計算結果作瞭比較,兩者計算結果能夠很好一緻;另外,本文還驗證瞭預測溶液錶麵張力的經驗方程,用其預測溶液的錶麵張力,不僅與溶液錶麵張力實驗值在誤差範圍內很好一緻,也與用等張比容方法預測的結果一緻.
재288.15-318.15 K온도범위내,측정료불동농도리자액체1-무기-3-갑기미서병산염([C5mim][Pro])수용액적밀도화표면장력,계산료불동온도하불동농도적용액열팽창계수、표관마이체적화용액등장비용;근거밀도실험수거계산득도용질표관팽창솔,병여Harned화Owen제공적이론방정계산결과작료비교,량자계산결과능구흔호일치;령외,본문환험증료예측용액표면장력적경험방정,용기예측용액적표면장력,불부여용액표면장력실험치재오차범위내흔호일치,야여용등장비용방법예측적결과일치.
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.