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.

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。