文献类型：期刊文献

英文题名：Critical properties of polydisperse fluid mixtures from an equation of state

作者：Cai, Jun[1]; Liu, Honlai[1]; Hu, Ying[1]; Prausnitz, John M.[1]

机构：[1]E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China;[2]Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA;[3]Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA

年份：2000

卷号：168

期号：1

起止页码：91

外文期刊名：FLUID PHASE EQUILIBRIA

收录：;EI(收录号：2000215127222);WOS:【SCI-EXPANDED(收录号:WOS:000085869500006)】；

语种：英文

外文关键词：continuous thermodynamics; critical point; spinodal; equation of state

摘要：Based on stability theory for polydisperse fluid mixtures, expressions have been developed for the spinodal criterion, critical criterion and various stability tests for systems containing one discrete component and one continuous homologue. Each criterion can be separated into two parts: the first part is the same in form as that for binary systems; when we assume particular mixing rules for parameters of the equation of state, that part is determined only by the average molar mass of the homologue. The second part is concerned with the distribution function that characterizes the continuous component. To illustrate results, the van der Waals equation of state is used to calculate critical properties; the composition dependences of parameters a(1/2) and b of the van der Waals equation are assumed to be linear functions of molar mass. Numerical results for the critical loci are obtained. For a discrete component j and a continuous component j, systematic variations of parameters in the distribution function for j or of the interaction parameter n(ij) Show transitions between qualitatively different types of phase behavior. (C) 2000 Elsevier Science B.V. All rights reserved.