N-甲基咪唑-水/甲醇/乙醇系的气液相平衡  

Gas-liquid equilibrium of binary mixtures of N-methylimidazole-water/methanol/ethanol

作　　者：张刚[1] 乔伟[1] 师浩军 马娜 侯海云[2] ZHANG Gang;QIAO Wei;SHI Hao-jun;MA Na;HOU Hai-yun(Yanchang Oilfield Co.,Ltd.Dingbian Oil Production Plant,Dingbian County,Dingbian 718600,China;School of Environmental and Chemical Engineering,Xi’an Polytechnic University,Xi’an 710048,China)

机构地区：[1]延长油田股份有限公司定边采油厂,陕西定边718600 [2]西安工程大学环境与化学工程学院,陕西西安710048

出　　处：《应用化工》2019年第S02期65-69,共5页Applied Chemical Industry

基　　金：国家自然科学基金(21603169)。

摘　　要：为了研究N-甲基咪唑分别与水、甲醇、乙醇组成的二元体系的相行为,利用折光率法测量了xN-甲基咪唑+(1-x)水/甲醇/乙醇三个二元体系在常压下的气-液共存相的组成,并绘制了t-n和t-x相图。发现:三个二元体系的气相中N-甲基咪唑含量很少,在x≤0.90时,气相中x_(g)最大值不超过x_(g)=0.06,且乙醇体系的气相中含有的N-甲基咪唑最少,表明乙醇与N-甲基咪唑的相互作用相对于水和甲醇来说,最弱;且三个二元体系在常压下都不存在恒沸点。In order to study the phase behavior of the binary mixtures of N-methylimidazole with water,methanol and ethanol,the equilibrium compositions of the gas-liquid phases of the mixtures of xN-methylimidazole+(1-x)water/methanol/ethanol were measured by measuring the refractive index of the gas and liquid phases.The t-n and t-x phase diagrams of the gas-liquid coexisting phase at atmospheric pressure were plotted and obtained.It was found that the content of N-methylimidazole in the gas phases of the three binary systems were all very small.The maximum value of x_(g)in the gas phase did not exceed x_(g)=0.06 at x≤0.90,and the N-methylimidazole contained in the gas phase of the mixture containing ethanol was the least,indicating that the interaction of ethanol with N-methylimidazole is the weakest relative to water and methanol.The three binary systems all have no azeotropic points at the atmospheric pressure.

关 键 词：气液相平衡 折光率 气相组成 液相组成 摩尔分数 

分 类 号：O62[理学—有机化学]