کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
230986 | 1427406 | 2012 | 19 صفحه PDF | دانلود رایگان |
Vapor–liquid critical locus (x, Tc, Pc) has been determined, in the whole range of mole fractions, for the systems {n-hexane + methanol, or +ethanol, or +propan-1-ol, or +butan-1-ol} and {CO2 + methanol, or +ethanol, or +propan-1-ol, or +butan-1-ol}.A comprehensive bibliographic review for the vapor–liquid equilibrium (VLE) and the critical locus of these systems has been performed, and they have been modelled with PC-SAFT EoS. The three parameters that characterize the segments of pure compounds have been rescaled from their critical point values. In all cases, the classical mixing rules and temperature-dependent binary interaction parameters kij(T)=kij0+kij1T have been used.The average deviations obtained for the n-hexane + alkan-1-ol binary mixtures are: for critical loci, mean relative deviation in critical temperature MRD(Tc) = 0.47% and in critical pressure MRD(Pc) = 3.38%; for VLE, mean relative deviation in bubble pressure MRD(P) = 2.90% and absolute deviation for the solvent mole fraction in the vapor phase ΔyC6H14=0.031.The average deviations obtained for the CO2 + alkan-1-ol binary mixtures are MRD(Tc) = 1.91% and MRD(Pc) = 5.93%; MRD(P) = 7.07% and ΔyCO2=0.022.
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► Vapor–liquid critical locus has been determined for {n-C6H14 or CO2 + alkan-1-ol} mixtures.
► A comprehensive bibliographic review for the VLE and critical locus of these systems has been performed.
► These systems have been modeled with PC-SAFT EoS.
Journal: The Journal of Supercritical Fluids - Volume 71, November 2012, Pages 26–44