乙酸乙酯-1,2-丙二醇二元系的密度、折射率和黏度

摘要/Abstract

摘要：

常压下测定了乙酸乙酯和1,2-丙二醇二元系在298.15～323.15 K下的密度、折射率和黏度，建立了混合液密度、黏度随组成和温度变化关系的方程。计算了过量摩尔体积V^E,折射率偏差Δn_D，黏度偏差Δη和过量流动活化自由能ΔG^*E。结果表明，过量摩尔体积低温时在全浓度范围内为负值，但随温度升高，在富酯区变为正值；而折射率偏差高温时在富醇区为微小正值，其他情况都是负值；黏度偏差和过量流动活化自由能显示了相同的变化关系，均为负值，且都随温度降低而偏差增大。

关键词: FONT-SIZE: 10.5pt, mso-ascii-font-family: Times New Roman, mso-bidi-font-family: Times New Roman, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">乙酸乙酯；FONT-SIZE: 10.5pt, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-fareast-font-family: 宋体" lang=EN-US>1,2-FONT-SIZE: 10.5pt, mso-ascii-font-family: Times New Roman, mso-bidi-font-family: Times New Roman, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">丙二醇；密度；折射率；黏度；超额性质

Abstract:

The densities, refractive indices, and viscosities of ethyl acetate + 1,2-propanediol binary mixture were measured at temperatures in the range of 298.15—323.15 K and atmospheric pressure using pycnometer, ABBE refractometer and Ubbelohde viscometer respectively.The density and viscosity data are fitted as a function of composition and temperature.Excess molar volumes(V^E), refractive index deviations(Δn_D), viscosity deviations(Δη)and excess Gibbs energy of activation of viscous flow(ΔG^*E)are calculated from the experimental data.The results show that the excess molar volumes are negative at 298.15 K and 303.15 K, but they turn to be positive in the rich ester region with rising of temperature.The refractive index deviations are negative except in the rich alcohol region.Both Δη and ΔG*E are negative over the whole mole fraction range in the temperature range studied, and the deviations is greater as temperature decreases.

Key words: FONT-SIZE: 10.5pt, mso-ascii-font-family: Times New Roman, mso-bidi-font-family: Times New Roman, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">乙酸乙酯；FONT-SIZE: 10.5pt, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-fareast-font-family: 宋体" lang=EN-US>1,2-FONT-SIZE: 10.5pt, mso-ascii-font-family: Times New Roman, mso-bidi-font-family: Times New Roman, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">丙二醇；密度；折射率；黏度；超额性质

凌锦龙, 曹枫, 徐敏虹, 俞丽丽. 乙酸乙酯-1,2-丙二醇二元系的密度、折射率和黏度 [J]. 化工学报, 2011, 62(5): 1191-1196.

LING Jinlong, CAO Feng, XU Minhong, YU Lili. Density, refractive index and viscosity of binary mixture of ethyl acetate and 1,2-propanediol[J]. CIESC Journal, 2011, 62(5): 1191-1196.

[1]	王建立, 朱建军, 宋辰兴, 张兴. 3ω法测量纳米流体热导率 [J]. 化工学报, 2011, 62(S1): 42-47.
[2]	马维刚, 王海东, 张兴, 王玮. 多晶金薄膜电子-声子耦合的实验研究 [J]. 化工学报, 2011, 62(S1): 48-53.
[3]	崔福庆, 何雅玲, 程泽东, 李东, 陶于兵. 有压腔式吸热器内辐射传播过程的Monte Carlo模拟 [J]. 化工学报, 2011, 62(S1): 60-65.
[4]	何奎, 汪双凤, 黄间珍. 气液两相流在微小T型三通中的相分配特性 [J]. 化工学报, 2011, 62(S1): 92-96.
[5]	刘绩伟, 吴玉庭, 马重芳. 管肋式空间辐射器设计 [J]. 化工学报, 2011, 62(S1): 103-107.
[6]	李旺, 王情愿, 李瑞龙, 李超, 宇波, 张劲军, 代鹏飞. 大型浮顶油罐温度场数值模拟 [J]. 化工学报, 2011, 62(S1): 108-112.
[7]	胡朝发, 贾力. 脉动热管气液塞振荡运动模型 [J]. 化工学报, 2011, 62(S1): 113-117.
[8]	任楠, 王涛, 吴玉庭, 马重芳. 混合碳酸盐的DSC测量与比热容分析 [J]. 化工学报, 2011, 62(S1): 197-202.
[9]	吴海波, 方岩雄, 纪红兵. 助溶剂促进的β-环糊精与肉桂醛的包结性能 [J]. 化工学报, 2011, 62(S1): 168-173.
[10]	褚燕彬, 曹柳林, 王晶. 利用组合B样条神经网络实现对间歇反应过程的动态建模 [J]. 化工学报, 2011, 62(S1): 157-162.
[11]	曾庆, 郭印诚, 牛振祺, 林文漪. 填料塔中氨水吸收二氧化碳的传质性能 [J]. 化工学报, 2011, 62(S1): 146-150.
[12]	张艾萍, 谢立强, 徐志明. 超声空化对换热器协同场的影响 [J]. 化工学报, 2011, 62(S1): 130-133.
[13]	彭冬根1，曹熔泉2,3，张小松2，殷勇高2. 基于热不平衡考虑的溶液除湿/再生传热传质系数(Ⅱ)实验与模型计算分析 [J]. CIESC Journal, 2011, 62(9): 2440-2446.
[14]	马淳安，储诚普，徐颖华，张虹. 3,6-二氯吡啶甲酸合成方法进展 [J]. CIESC Journal, 2011, 62(9): 2398-2405.
[15]	刘夺, 杜瑾, 赵广荣, 元英进. 合成生物学在医药及能源领域的应用 [J]. 化工学报, 2011, 62(9): 2391-2397.

乙酸乙酯-1,2-丙二醇二元系的密度、折射率和黏度

Density, refractive index and viscosity of binary mixture of ethyl acetate and 1,2-propanediol

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价