【摘要】 研究采用动态法测定常压下费托蜡在正丁醇、乙酸丁酯、正辛烷、石油醚和甲苯溶剂体系中的溶解度。结果表明，费托蜡在5种有机溶剂中的溶解度均随温度升高而增大，且在不同溶剂中费托蜡的溶解度存在较大差异。采用Apelblat方程、多项式方程以及简化的二参数方程关联溶解度数据，关联结果良好，但Apelblat方程、多项式方程的拟合效果优于简化的二参数方程。此外，通过修正的Van’t Hoff方程计算，得到费托蜡在5种有机溶剂中的溶解焓Δ_solH、溶解熵Δ_solS和溶解吉布斯自由能Δ_solG，结果表明费托蜡在5种有机溶剂中的溶解过程均为吸热、熵增的非自发过程。所得结果能够为费托蜡结晶工艺的开发提供重要的理论依据。更多还原

【Abstract】 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 Δ_solH,dissolution entropy Δ_solS and dissolution Gibbs free energyΔ_solG 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.更多还原