某些单体-单体、单体-二聚体体系的活度系数

用气液色谱法测定了苯在二苯醚、联苄、二苄醚、二苯甲烷、二苯乙炔、二苯甲酮、联苯、二苯胺、α-甲基萘、α-氯萘、α-溴萘、氮萘、α-硝基萘、α-萘胺等十四种溶剂中的无限稀活度系数;用单体-二聚体的溶液模型对以上体系进行活度系数的计算,计算值与实验值接近。 用气液色谱法测定了甲苯、乙苯、邻二甲苯、对二甲苯、间二甲苯等五种溶质在环丁砜、二甲基环丁砜、N-甲基吡咯烷酮,5,N-二甲基吡咯烷酮等四种溶剂中的无限稀活度系数;用单体-单体的溶液模型计算溶剂的“溶解度参数”,计算得各溶剂的“溶解度参数”分别为一常数。

ACTIVITY COEFFICIENTS OF SOME MONOMER-MONOMER AND MONOMER-DIMER

The activity coefficients of benzene in infinitely dilute solution in fourteen solvents at 60°C have been evaluated by gas-liquid chromatography. The activity coefficients of the same systems have been calculated by means of a monomer-dimer solution model. Calculation showed that the experimental data could be predicated by this model.The activity coefficients of toluene, ethylbenzene, o-xylene, rn-xylene and p-xylene in infinitely dilute solution in four solvents at 60°C have been evaluated also by gas-liquid chromatography.By applying a monomer-monomer solution model, the solubility para-menters of these solvents have been calculated. The values of solubility paramenter for the same solvent with different solutes are constant within the experimental uncertainty,