摘要
采用乌氏黏度仪,在常压和293.15～323.15 K温度范围内测定了均三甲苯与二异丁基甲醇混合溶剂以及两种纯溶剂的黏度,计算了不同温度和组成下混合溶剂的超额黏度。用Redlich-Kister方程对超额黏度进行了关联;用Andrade方程、UNIFA-VISCO模型以及Grunberg-Nissan模型对黏度进行了关联与预测。结果表明,混合溶剂的黏度随温度升高和均三甲苯含量增加而减小。超额黏度均为负值,且随均三甲苯含量增加呈U形变化,约在均三甲苯摩尔分数为0.3时达到最低。Grunberg-Nissan模型对黏度数据的关联和预测性最好,预测值与实测值的最大和平均相对偏差分别为12.96%和5.74%。
The viscosities of mixed solvents consisted of 1,3,5-trimethylbenzene （TMB） and diisobutylcarbinol （DIBC） were determined at temperature ranging from 293.15 to 323.15 K and atmospheric pressure for the whole range of compositions by using viscometer. The excess molar viscosities of the mixed solvents were calculated and correlated by Redlich-Kister equation. The viscosities of the mixtures were correlated and predicted by Andrade equation, UNIFA-VISCO model, and Grunberg-Nissan model. The viscosities of the mixtures decreased with the increase of temperature and molar fraction of TMB. The excess viscosities showed negative deviations from ideal behavior, gave U-shaped curves as the molar fraction of TMB （x1） increased, and reached the minimum values at ca x1=0.3. The Grunberg-Nissan model was quite reasonable with the maximum and average relative errors between predicted and experimental data of 12.96% and 5.74%.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2015年第9期3377-3382,共6页
CIESC Journal
基金
中石化总公司基础科研项目(413001)~~
关键词
三甲苯
二异丁基甲醇
黏度
蒽醌法
过氧化氢
trimethylbenzene
diisobutylcarbinol
viscosity
anthraquinone process
hydrogen peroxide
