物理化学学报 >> 2015, Vol. 31 >> Issue (8): 1468-1473.doi: 10.3866/PKU.WHXB201506111

热力学,动力学和结构化学 上一篇    下一篇

四种深共融溶剂的性质:密度、电导率、动力粘度及折光率

宿洪祯1,尹静梅1,刘青山2,*(),李长平1,*()   

  1. 1 大连大学环境与化学工程学院,辽宁大连116622
    2 沈阳农业大学理学院,沈阳110866
  • 收稿日期:2015-03-13 发布日期:2015-08-12
  • 通讯作者: 刘青山,李长平 E-mail:liuqingshan@dicp.ac.cn;changpingli@dicp.ac.cn
  • 基金资助:
    国家自然科学基金(21203193, 21306016, 21176033)

Properties of Four Deep Eutectic Solvents: Density, Electrical Conductivity, Dynamic Viscosity and Refractive Index

Hong-Zhen. SU1,Jing-Mei. YIN1,Qing-Shan. LIU2,*(),Chang-Ping. LI1,*()   

  1. 1 College of Chemical Engineering and the Environment, Dalian University, Dalian 116622, Liaoning Province, P. R. China
    2 School of Science, Shenyang Agricultural University, Shenyang 110866, P. R. China
  • Received:2015-03-13 Published:2015-08-12
  • Contact: Qing-Shan. LIU,Chang-Ping. LI E-mail:liuqingshan@dicp.ac.cn;changpingli@dicp.ac.cn
  • Supported by:
    the National Natural Science Foundation of China(21203193, 21306016, 21176033)

摘要:

制备了四种四丁基氯化铵类深共融溶剂,包括四丁基氯化铵:丙酸[TBAC:2PA]、四丁基氯化铵:乙二醇[TBAC:2EG]、四丁基氯化铵:聚乙二醇[TBAC:2PEG]、四丁基氯化铵:苯乙酸[TBAC:2PAA].在288.15-338.15 K温度范围内,测定了它们的密度、电导率、动力粘度及折光率.讨论了温度对密度、电导率、动力粘度及折光率等性质的影响.通过经验方程估算了深共融溶剂的热膨胀系数、分子体积、标准摩尔熵及晶格能等热力学性质参数.利用Vogel-Fulcher-Tamman (VFT)方程和Arrhenius方程,将测量的电导率和动力粘度对温度拟合,得到了动力粘度和电导率随温度变化方程式.有关研究对深共融溶剂的工业化应用具有重要意义.

关键词: 深共融溶剂, 密度, 电导率, 动力粘度, 折光率

Abstract:

Four deep eutectic solvents (DESs) were prepared from tetrabutylammonium chloride: tetrabutylammonium chloride:propionic acid [TBAC:2PA], tetrabutylammonium chloride:ethylene glycol [TBAC:2EG], tetrabutylammonium chloride:polyethylene glycol [TBAC:2PEG], and tetrabutylammonium chloride:phenylacetic acid [TBAC:2PAA]. The density, electrical conductivity, dynamic viscosity, and refractive index of the samples were measured at 288.15-338.15 K under atmospheric pressure. The influence of the temperature on the density, electrical conductivity, dynamic viscosity, and refractive index are discussed. The thermal expansion coefficient, molecular volume, standard molar entropy, and lattice energy were determined from the measured values using empirical equations. The temperature dependences on the electrical conductivity and dynamic viscosity of the DESs were fitted by the Vogel-Fulcher-Tamman (VFT) equation. The Arrhenius equation is also discussed for the electrical conductivity and dynamic viscosity. The above study will be of great significance for the industrial and engineering applications of DESs.

Key words: Deep eutectic solvent, Density, Electrical conductivity, Dynamic viscosity, Refractive index

MSC2000: 

  • O642