The approach recently proposed by Liu and Qu was extended to correlate excess enthalpies of highly asymmetric binary systems.In this approach,FRKS equation of state was used, and Lij（T,x）function was applied in plac...The approach recently proposed by Liu and Qu was extended to correlate excess enthalpies of highly asymmetric binary systems.In this approach,FRKS equation of state was used, and Lij（T,x）function was applied in place of single value of the binary interaction parameter Lij.Twenty four binary systems,including benzene -(C11～C17)lakane,benzene -methyl naphthalene,xylene-（C3～C8）al-cohol,l-Hepetanol-（C6～C9）alkane,methanol,ethanol-chlorobenzene,were selected to do the test.For most of these binary systems, no equation of state method has been found accurate.The results obtained show that this method can improve significantly the correlation of excess enthalpies for highly asymmetric binary systems.The calculated excess enthalpies for most of the selected systems are in good agreement with experimental data.展开更多
An associating MH equation of state (AMH EOS) is developed on the basis of the MH equation of state by incorporating the chemical association into it, a constant evaluation method is proposed for the AMH EOS. The AMH ...An associating MH equation of state (AMH EOS) is developed on the basis of the MH equation of state by incorporating the chemical association into it, a constant evaluation method is proposed for the AMH EOS. The AMH EOS is used to calculate thermodynamic properties of water, some alcohols and carboxylic acids, good results are obtained. It shows that the constant evaluation method is feasible.展开更多
文摘The approach recently proposed by Liu and Qu was extended to correlate excess enthalpies of highly asymmetric binary systems.In this approach,FRKS equation of state was used, and Lij（T,x）function was applied in place of single value of the binary interaction parameter Lij.Twenty four binary systems,including benzene -(C11～C17)lakane,benzene -methyl naphthalene,xylene-（C3～C8）al-cohol,l-Hepetanol-（C6～C9）alkane,methanol,ethanol-chlorobenzene,were selected to do the test.For most of these binary systems, no equation of state method has been found accurate.The results obtained show that this method can improve significantly the correlation of excess enthalpies for highly asymmetric binary systems.The calculated excess enthalpies for most of the selected systems are in good agreement with experimental data.
文摘An associating MH equation of state (AMH EOS) is developed on the basis of the MH equation of state by incorporating the chemical association into it, a constant evaluation method is proposed for the AMH EOS. The AMH EOS is used to calculate thermodynamic properties of water, some alcohols and carboxylic acids, good results are obtained. It shows that the constant evaluation method is feasible.
