• 作者： Twu, Chorng H.; Coon, John E.
• 中文摘要： --
• 英文摘要： A recently proposed mixing rule for cubic equations of state, which reduces to the van der Waals mixing rule and satisfies the second virial coefficient constraint, has been combined with activity coefficient model parameters recently reported in the DECHEMA Chemistry Data Series at a low isothermal temperature to predict high pressure phase behavior for nonideal systems. Wong and Sandler (WS, 1992) and Dahl and Michelsen (MHV 2, 1990) are two recent equation of state mixing rules that can make use of the reported activity coefficient model parameters in the equation of state mixing rule model. Although they are excellent mixing rules for correlating data for highly nonideal systems, they have some shortcomings when applied to simple and asymmetric systems (Coutsikos et al., 1995; Voros and Tassios, 1993). Huang and Sandler (1993) reported that the WS mixing rule has a significant advantage in accuracy over the MHV 2 mixing rule. For this reason, the Wong-Sandler mixing rule has therefore been selected in this work for comparison of the performance of our mixing rule for its the ability to reproduce the excess free energy function of the incorporated activity coefficient model and in the prediction of the high pressure phase behavior for strongly nonideal systems using published activity coefficient parameters at low temperature.
• 中文關鍵字： 混合原則; 狀態方程式; 凡得瓦混合原則; 第二Virial係數; 液體活性係數
• 英文關鍵字： Mixing Rule; Equation Of State; Van Der Waals Mixing Rule; Second Virial Coefficient; Liquid Activity Coefficient