Thermodynamic properties of 1-ethyl-3-methylimidazolium methyl phosphonate and 1-ethyl-3-methylimidazolium ethyl phosphonate

被引：0
|
作者：
Liu Z. [1 ]
Zeng J. [1 ]
Liao Y. [1 ]
Tang X. [1 ]
Zhao B. [1 ]
Han S. [1 ]
Zhang W. [1 ]
机构：
[1] State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi’an Modern Chemistry Research Institute, Shaanxi, Xi’an
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2024年 / 43卷 / 02期
关键词：
alkylimidazolium phosphonate ionic liquids; conductivity; density; surface tension; viscosity;
D O I：
10.16085/j.issn.1000-6613.2023-1971
中图分类号：
学科分类号：
摘要：
The ionic liquids 1-ethyl-3-methylimidazolium methyl phosphonate ([Emim] [OMP]) and 1-ethyl-3-methylimidazolium ethyl phosphonate ([Emim][OMP]) were synthesized and characterized by nuclear magnetic resonance and elemental analysis. The thermal stability, phase behavior, density and viscosity (293.15—353.15K), and conductivity and surface tension (293.15—343.15K) were measured at atmospheric pressure, and correlated with established empirical equations. Some thermophysical properties such as the isobaric thermal expansion coefficients, molecular volume, standard entropy and lattice potential energy were determined using the measured density data, while the surface excess energy and entropy were estimated using the measured surface tension data. The thermal gravimetric analysis showed that the thermal decomposition temperatures (Tonset) of [Emim][OMP] and [Emim][OMP] were 271.0℃ and 259.2℃, respectively. Differential scanning calorimetry results revealed that [Emim][OMP] and [Emim][OEP] had no melting or freezing points, but only glass-transition temperatures (Tg), and the Tg of [Emim][OMP] and [Emim][OEP] were -84.87℃ and -85.00℃, respectively. The Walden rule analysis demonstrated that [Emim][OMP] and [Emim][OEP] ionic liquids complied with the Walden rule well, and were classified as “good ionic liquids”. © 2024 Chemical Industry Press Co., Ltd.. All rights reserved.
引用
收藏
页码：1054 / 1062
页数：8
相关论文
共 36 条
  • [1] WILKES John S., A short history of ionic liquids—From molten salts to neoteric solvents, Green Chemistry, 4, 2, pp. 73-80, (2002)
  • [2] OHNO HIROYUKI, Importance and possibility of ionic liquids [M], (2005)
  • [3] MACFARLANE Douglas R, PRINGLE Jennifer M, JOHANSSON Katarina M, Et al., Lewis base ionic liquids, Chemical Communications, 18, pp. 1905-1917, (2006)
  • [4] KAZUHIDE Ueno, HIROYUKI Tokuda, MASAYOSHI Watanabe, Ionicity in ionic liquids: Correlation with ionic structure and physicochemical properties, Physical Chemistry Chemical Physics: PCCP, 12, 8, pp. 1649-1658, (2010)
  • [5] ZHOU Zhibin, HAJIME Matsumoto, KUNIAKI Tatsumi, Structure and properties of new ionic liquids based on alkyl- and alkenyltrifluoroborates, Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry, 6, 7, pp. 1324-1332, (2005)
  • [6] ANDERSON Jared L, DING Rongfang, ELLERN Arkady, Et al., Structure and properties of high stability geminal dicationic ionic liquids, Journal of the American Chemical Society, 127, 2, pp. 593-604, (2005)
  • [7] APPETECCHI Giovanni B, MONTANINO Maria, ZANE Daniela, Et al., Effect of the alkyl group on the synthesis and the electrochemical properties of N-alkyl-N-methyl-pyrrolidinium bis (trifluoromethanesulfonyl)imide ionic liquids, Electrochimica Acta, 54, 4, pp. 1325-1332, (2009)
  • [8] DZYUBA Sergei V, BARTSCH Richard A., Influence of structural variations in 1-alkyl(aralkyl)-3-methylimidazolium hexafluorophosphates and bis(trifluoromethylsulfonyl)imides on physical properties of the ionic liquids, Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry, 3, 2, pp. 161-166, (2002)
  • [9] KUNZE Miriam, JEONG Sangsik, PAILLARD Elie, Et al., Melting behavior of pyrrolidinium-based ionic liquids and their binary mixtures, The Journal of Physical Chemistry C, 114, 28, pp. 12364-12369, (2010)
  • [10] SEKI Shiro, KOBAYASHI Takeshi, KOBAYASHI Yo, Et al., Effects of cation and anion on physical properties of room-temperature ionic liquids, Journal of Molecular Liquids, 152, pp. 9-13, (2010)
1234