中文摘要：

采用激光法测定了碳酸二苯酯（DPC）在乙醇-碳酸二乙酯（DEC）混合溶剂中的溶解度。结果表明,在283.15～333.15 K下,碳酸二苯酯在混合溶剂中的溶解度随温度的升高而增大;相同温度下,溶解度随着乙醇浓度的增大而减小。进一步选用Wilson方程和λh方程拟合DPC的溶解度,根据实验数据回归了模型参数,溶解度拟合值与实验值非常吻合,平均误差小于2.0%。计算表明Wilson方程对碳酸二苯酯-乙醇-碳酸二乙酯体系的计算精度更高些。

英文摘要：

The solubility of diphenyl carbonate （DPC） in ethanol-diethyl carbonate （DEC） was determined with the laser-scattering method. The results showed that the solubility of DPC in the mixed solvents always increased with rising temperature. At 283.15--333.15 K, the solubility decreased with the increase of ethanol concentration. The experimental data were further correlated with Wilson equation and Ah equation, and model parameters were regressed. For the DPC- C2 H5 OH-DEC system, the agreement between the experimental solubilities and calculated values was satisfactory. The mean deviation was less than 2.0%. Obviously, the correlated results using Wilson equations were superior to those obtained from λh equation.