【摘要】 将汪文化等提出的（dγ/dx）_x=0近似表达式用于预测二元溶液液相活度系数,与UNIFAC法相比,在266组等温互溶与44组等温部分互溶体系中,175组斜率法预测的误差比UNIFAC法预测的误差小,73组两法预测的误差相近,62组斜率法预测的误差大.对两法预测的优缺点进行了分析.更多还原

【Abstract】 The expression of （dγ / dx）_x=0 proposed by Wang Wenhua et al. was employed in the slope method to predict activity coefficients in binaries. Comparison with predictions made by using UNIFAC showed that among 266 isothermal miscible and 44 partially miscible systems, the average absolute deviations of 175 predicted with the slope method were smaller than that of those predicted with UNIFAC. 73 systems predicted with both methods were nearly the same, while the other 62 systems predicted with the slope method were greater.更多还原