文献类型：期刊文献

英文题名：Vapor-liquid critical properties of multi-component mixtures containing carbon dioxide and n-alkanes

作者：Qiu, Delin[1]; Fu, Jinyan[1]; Cai, Jun[1]; Peng, Changjun[1]; Liu, Honglai[1]; Hu, Ying[1]

机构：[1] Department of Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China

年份：2006

卷号：248

期号：2

起止页码：191

外文期刊名：Fluid Phase Equilibria

收录：EI(收录号：20063810120286)

语种：英文

外文关键词：Carbon dioxide - Composition - Equations of state - High pressure effects - Mixtures - Paraffins

摘要：Vapor-liquid critical temperatures, pressures and densities of multi-component mixtures containing CO2 and n-alkanes (C4-C7) were measured in a high-pressure view cell by direct visual observations. The molar ratio of alkanes was fixed during the experiment while the composition of CO2 was varied over the whole range. The critical loci show type I fluid phase behavior if the n-alkanes mixture is treated as a pseudo-continuous component, while correspondingly, CO2 is a discrete component. The critical properties were calculated by Redlich-Kwong-Soave equation of state (SRK) combined with a renormalization group correction (RG). The predictions of critical properties by SRK + RG are in good agreement with the experimental results. ? 2006 Elsevier B.V. All rights reserved.