Isobaric Vapor鈥揕iquid Equilibrium for the Binary Systems of Methanol, Diethylamine, and N,N-Diethylethanolamine at p = (60.0 and 101.3) kPa

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• 作者：Changsheng Yang ; Zhenli Qin ; Yali Xu ; Hao Zeng ; Feizhong Sun ; Ping Zhang ; Yang Feng
• 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：482-487
• 全文大小：279K
• 年卷期：v.58,no.2(February 14, 2013)
• ISSN：1520-5134

文摘

Isobaric vapor鈥搇iquid equilibrium (VLE) data have been measured with a modified Rose鈥揥illiams still for the binary systems of methanol (1) + diethylamine (2), methanol (1) + N,N-diethylethanolamine (2), and N,N-diethylethanolamine (1) + diethylamine (2) at p = (60.0 and 101.3) kPa. All of the experimental data pass the thermodynamic consistency test by the method of Herington and the point test of Van Ness. The system of methanol + diethylamine (DEA) at two pressures exhibits a maximum temperature azeotrope. The other two systems did not show that behavior. The experimental VLE data were well-correlated with the Wilson and universal quasichemical (UNIQUAC) activity coefficient models, and the average absolute deviations (AAD) of the vapor-phase mole fraction 螖y between the experimental and the calculated values for all of the measured systems are less than 0.01.