Determination and correlation of the solubility of Fischer-Tropsch wax in five different organic solvents

被引：0
|
作者：
Xie H.-D. [1 ]
Xu K.-F. [1 ]
Yu Y.-N. [1 ]
Zhang S.-Z. [2 ]
Zhang C.-Q. [2 ]
Jiang C.-G. [2 ]
Zhang F. [3 ]
Chen S.-L. [1 ]
机构：
[1] College of Chemical Engineering and Environment, China University of Petroleum, Beijing
[2] National Institute of Clean-and-Low-Carbon Energy, Beijing
[3] College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing
来源：
Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities | 2022年 / 36卷 / 01期
关键词：
Dissolution thermodynamic properties; Fischer-Tropsch wax; Solid-liquid equilibrium; Solubility;
D O I：
10.3969/j.issn.1003-9015.2022.01.004
中图分类号：
学科分类号：
摘要：
Solubilities of Fischer-Tropsch wax in organic solvents (n-butanol, butyl acetate, n-octane, petroleum ether and toluene) under atmospheric pressure were measured by a dynamic method. The results show that the solubilities of Fischer-Tropsch wax in the five organic solvents increase with temperature, and are of great difference in different solvents. The solubility data were well correlated by Apelblat equation, polynomial equation and simplified two-parameter equation, and better correlated by Apelblat equation and polynomial equation than by simplified two-parameter equation. In addition, the values of the dissolution enthalpy ΔsolH, dissolution entropy ΔsolS and dissolution Gibbs free energy ΔsolG of Fischer-Tropsch wax in the five organic solvents were calculated by modified Van't Hoff equation. The obtained values of these thermodynamic parameters show that the dissolution processes of Fischer-Tropsch wax in the five organic solvents are endothermic, entropic and non-spontaneous. The results obtained can provide an important theoretical basis for the development of Fischer-Tropsch wax crystallization processes. © 2022, Editorial Board of "Journal of Chemical Engineering of Chinese Universities". All right reserved.
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页码：28 / 35
页数：7
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