Excess molar volumes and viscosities for binary mixtures of 3-heptanone + ethyl acetate，3-heptanone + butyl acetate，3-heptanone + tributyl phosphate， and methyl isobutyl ketone + tributyl phosphate

doi:10.3969/j.issn.0438-1157.2012.08.001

Abstract

Abstract: Densities and viscosities of four binary mixtures of 3-heptanone + ethyl acetate，3-heptanone + butyl acetate，3-heptanone + tributyl phosphate and methyl isobutyl ketone + tributyl phosphate were determined from 293.15 K to 318.15 K under atmospheric pressure using Anton Paar DMA5000 vibrating-tube densimeter and Anton Paar AMVn automated micro viscometer.From the experimental data of density and viscosity，the excess molar volumes V^E and viscosity deviation Δη were calculated and correlated with the Redlich-Kister polynomial equation.The viscosities of the mixtures were correlated by Orrick-Erbar (O-E)group-contribution method.And the new group-contribution parameters A and B for (—O)₃—P=O group were obtained.The results show that the improved Orrick-Erbar equation is able to predict the viscosities for mixtures from their pure solvents and the deviation is acceptable in engineering applications.

Key words: 3-heptanone, tributyl phosphate, methyl isobutyl ketone, ethyl acetate, butyl acetate, density, viscosity, Orrick-Erbar group-contribution method

摘要： 常压下测定了3-庚酮+乙酸乙酯、3-庚酮+乙酸丁酯、3-庚酮+磷酸三丁酯（TBP）、4-甲基-2-戊酮（MIBK）+磷酸三丁酯4个二元体系在293.15～318.15 K下的密度和黏度值，计算了二元体系的过量摩尔体积V^E和过量黏度Δη，并用Redlich-Kister方程对V^E和Δη进行了关联。混合溶剂的黏度数据采用Orrick-Erbar(O-E)基团贡献法进行了关联和预测，增加了O-E方法中的(—O)₃—P=O 基团贡献值。结果表明，O-E方法可根据现有的纯溶剂的黏度数据预测得到混合溶剂的黏度，平均误差小于15%。

关键词: 3-庚酮, 磷酸三丁酯, 4-甲基-2-戊酮, 乙酸乙酯, 乙酸丁酯, 密度, 黏度, Orrick-Erbar(O-E)基团贡献法

CLC Number:

O 642. 16

YANG Deling1，LIN Xiao2，CAO Hongbin2，LI Yigui2，ZHANG Yi2. Excess molar volumes and viscosities for binary mixtures of 3-heptanone + ethyl acetate，3-heptanone + butyl acetate，3-heptanone + tributyl phosphate， and methyl isobutyl ketone + tributyl phosphate[J]. CIESC Journal, 2012, 63(8): 2327-2340.

杨得岭1，林晓2，曹宏斌2，李以圭2，张懿2. 3-庚3-庚酮+乙酸乙酯、3-庚酮+乙酸丁酯、3-庚酮+TBP、MIBK+TBP二元体系的过量摩尔体积和黏度[J]. 化工学报, 2012, 63(8): 2327-2340.

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