氨基化离子液体[NH2-Pmim][BF4]与乙腈二元体系的热力学性质研究  

Study on thermodynamic properties of amino ionic liquid[NH2-Pmim][BF4]+Acetonitrile binary system

作　　者：张庆国[1,2] 邸阳 杨蕙歌 ZHANG Qingguo;DI Yang;YANG Huige(College of Chemistry and Chemical Engineering,Bohai University,Jinzhou 121013,China;College of New Energy,Bohai University,Jinzhou 121013,China)

机构地区：[1]渤海大学化学化工学院,辽宁锦州121013 [2]渤海大学新能源学院,辽宁锦州121013

出　　处：《渤海大学学报（自然科学版）》2020年第1期1-8,共8页Journal of Bohai University:Natural Science Edition

基　　金：国家自然科学基金项目(No:2150320);辽宁省青年科技人才项目(No:LQ2019004).

摘　　要：制备了一种新型氨基化离子液体1-氨丙基-3-甲基咪唑四氟硼酸盐([NH2-Pmim][BF4])与乙腈(ACN)的全浓度二元混合体系,在大气压力下,对288.15 K^333.15 K下全浓度二元混合体系的密度、电导率等热力学性质完成了测定,采用Vogel-Fulcher-Tamman(VFT)方程描述了二元混合体系电导率与温度的变化关系.根据经验方程计算了此体系的超额摩尔体积VE,讨论了体系的超额摩尔体积与组分、温度之间的变化关系,由VE的变化趋势讨论了体系内部分子的体积堆叠情况.A novel binary mixture system of a new amino ionic liquid 1-aminopropyl-3-methylimidazolium tetrafluoroborate([NH2-Pmim][BF4])+Acetonitrile(ACN)was prepared.The thermodynamic properties such as density and electrical conductivity of thebinary mixture system in whole concentration rangefrom 288.15 K^333.15 K were measured under room pressure.The temperature dependence was discussed by Vogel-Tamman-Fulcher(VTF)equation.The excess molar volume VE,the relationships between the excess molar volume of the system and the composition or temperature were discussed.The interaction between the molecules in the system was also discussed by the change of VE.The investigation on thermodynamic properties of mixed IL-based systems can provide effective theoretical support for the application of similar systems.

关 键 词：离子液体 二元体系 热力学性质 超额性质 

分 类 号：O642[理学—物理化学]