Isobaric Vapor鈥揕iquid Equilibrium for Methanol + Dimethyl Carbonate + 1-Butyl-3-methylimidazolium Dibutylphosphate

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• 作者：Xiaochun Chen ; Fufeng Cai ; Xinying Wu ; Charles Asumana ; Guangren Yu
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2013
• 出版时间：May 9, 2013
• 年：2013
• 卷：58
• 期：5
• 页码：1186-1192
• 全文大小：324K
• 年卷期：v.58,no.5(May 9, 2013)
• ISSN：1520-5134

文摘

Isobaric vapor鈥搇iquid equilibrium at 101.3 kPa for the ternary system methanol + dimethyl carbonate +1-butyl-3-methylimidazolium dibutylphosphate ([BMIM][DBP]) and their binary systems are determined using a modified Othmer still. By adding [BMIM][DBP] into the azeotropic system of methanol + dimethyl carbonate, the relative volatility of dimethyl carbonate is increased, which might be ascribed to the salting-out effect of [BMIM][DBP]. The relative volatility 伪₂₁ increases with increasing molar fraction of [BMIM][DBP]. The azeotropic point disappears when the molar fraction of [BMIM][DBP] is above 0.150. The equilibrium data are well fitted by the electrolyte nonrandom two-liquid model.