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Prediction of dynamic viscosities of carbon dioxide – organic solvent mixtures with combined equation of state and Eyring theory
The Journal of Supercritical Fluids ( IF 3.4 ) Pub Date : 2021-07-08 , DOI: 10.1016/j.supflu.2021.105345
Norihiro Onodera 1 , Junichi Sakabe 1 , Toshitaka Funazukuri 1
Affiliation  

This study proposes a method without adjustable parameters for predicting the viscosities of CO2 expanded alkane or 1-alkanol ((1.0–120) MPa, (298−473) K) using the perturbed-chain statistical associating fluid theory (PC-SAFT) equation of state, and the Eyring kinetic theory equation. The accuracy in terms of average relative deviation (ARD) between the calculated results and experimental data was 19% for the present method, 15% for the ASOG-VISCO model, and 37% for the method based on the corresponding state principle. When the Eyring constant k was determined as an adjustable parameter in each system, the accuracy was improved to 12%. The Eyring k in CO2 + alkane and CO2 + alcohol systems were expressed by each linear relationship with the number of carbon atoms in solvent organic compounds.



中文翻译:

结合状态方程和艾林理论预测二氧化碳-有机溶剂混合物的动态粘度

本研究提出了一种没有可调参数的方法,用于使用扰动链统计相关流体理论 (PC-SAFT)预测 CO 2膨胀烷烃或 1-烷醇 ((1.0-120) MPa, (298-473) K) 的粘度状态方程和 Eyring 动力学理论方程。计算结果与实验数据之间的平均相对偏差 (ARD) 的准确性对于本方法为 19%,对于 ASOG-VISCO 模型为 15%,对于基于相应状态原理的方法为 37%。当 Eyring 常数k被确定为每个系统中的可调参数时,精度提高到 12%。CO 2 + 烷烃和 CO 2 中的 Eyring k + 醇系统由与溶剂有机化合物中碳原子数的每个线性关系表示。

更新日期:2021-07-21
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