摘要
从分子热力学出发，研究了三元同分异构体物系的固液相平衡问题，采用基团贡献法对芳烃衍生物的同分异构体进行描述。新定义了一些大基团，并对原型ＵＮＩＦＡＣ方程进行了改进。采用二元实验数据对新基团的参数进行了回归，应用所得参数对二元实验数据进行检验，检验结果与实验值非常接近；对三元实验数据进行预测，所得结果令人满意。
The solid liquid equilibrium (SLE) of aromatics derivative isomer is studied by using DSC method.Some new groups are defined in order to use UNIFAC equation to describe the isomer systems. An improvement of UNIFAC equation is given.The result is satisfactory when an improved UNIFAC equation is used to make regressions of SLE of the systems,and it approximates to the experimental data when we use UNIFAC equation to predict the SLE of concerning system.
出处
《化学工程》
CAS
CSCD
北大核心
1999年第2期41-45,共5页
Chemical Engineering(China)
