Vapor鈥揕iquid Equilibrium for Ternary and Binary Mixtures of 2-Isopropoxypropane, 2-Propanol, and N,N-Dimethylacetamide at 101.3 kPa

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• 作者：Zhigang Zhang ; Lei Yang ; Yuan Xing ; Wenxiu Li
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2013
• 出版时间：February 14, 2013
• 年：2013
• 卷：58
• 期：2
• 页码：357-363
• 全文大小：305K
• 年卷期：v.58,no.2(February 14, 2013)
• ISSN：1520-5134

文摘

Vapor鈥搇iquid equilibrium (VLE) data of the 2-isopropoxypropane + 2-propanol + N,N-dimethylacetamide ternary system have been reported at 101.3 kPa, as well as for 2-isopropoxypropane + 2-propanol and 2-isopropoxypropane + N,N-dimethylacetamide + and 2-propanol + N,N-dimethylacetamide binary systems. From the results of the VLE data, it passed the thermodynamic consistency test. The universal functional (UNIFAC), universal quasichemical (UNIQUAC), nonrandom two-liquid (NRTL), and Wilson models were used to correlate the activity coefficients with its composition. The results indicate that these models allow a very good prediction of the phase equilibrium of the ternary system using the pertinent parameters of the binary systems. The 2-isopropoxypropane + 2-propanol binary azeotropes are eliminated by N,N-dimethylacetamide, and there is a significant change with phase equilibrium behavior. Hence, the N,N-dimethylacetamide appears to be an effective solvent.