Study on Solution Enthalpies of Ionic Liquids of C3MIBF4 and C5MIBF4

Acta Chimica Sinica ›› 2008, Vol. 66 ›› Issue (4): 408-412. Previous Articles Next Articles

Original Articles

离子液体C₃MIBF₄和C₅MIBF₄溶解焓的研究

房大维¹,2, 孙迎春¹, 李吉广¹, 王朕威¹, 杨家振*^,1

(¹辽宁大学化学院稀散元素研究所沈阳 110036)
(²中国科学院盐湖研究所西宁 810008)

投稿日期:2007-06-27 修回日期:2007-09-10 发布日期:2008-02-28
通讯作者: 杨家振

Study on Solution Enthalpies of Ionic Liquids of C₃MIBF₄ and C₅MIBF₄

FANG Da-Wei¹,2; SUN Ying-Chun¹; LI Ji-Guang¹; WANG Zhen-Wei¹; YANG Jia-Zhen*^,1

(¹ College of Chemistry, Institute of Rare and Scattered Elements, Liaoning University, Shenyang 110036)
(² Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008)

Received:2007-06-27 Revised:2007-09-10 Published:2008-02-28
Contact: YANG Jia-Zhen

Abstract

The molar enthalpies of dissolution (Δ_sH_m) of ionic liquids C₃MIBF₄ (1-methyl-3-propylimida- zolium tetrafluoroborate) and C₅MIBF₄ (1-methyl-3-pentylimidazolium tetrafluoroborate) in water were determined by a solution-reaction isoperibol calorimeter at 298.15 K. According to Pitzer’s electrolyte solution theory, the standard molar enthalpy values of solutions of C₃MIBF₄ and C₅MIBF₄, and Pitzer parameters: and , were obtained, respectively. The hydration enthalpies of cations ΔH_＋ in C₅MIBF₄ and C₃MIBF₄ estimated from Glasser’s theory of lattice energy were －171 and －207 kJ•mol^－1, respectively.

Key words: ionic liquid, isoperibol calorimeter, solution enthalpy, Pitzer’s theory, hydration enthalpy of cation

Cite this article

FANG Da-Wei^1,2; SUN Ying-Chun; LI Ji-Guang; WANG Zhen-Wei; YANG Jia-Zhen*^,1. Study on Solution Enthalpies of Ionic Liquids of C₃MIBF₄ and C₅MIBF₄[J]. Acta Chimica Sinica, 2008, 66(4): 408-412.

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离子液体C₃MIBF₄和C₅MIBF₄溶解焓的研究

Study on Solution Enthalpies of Ionic Liquids of C₃MIBF₄ and C₅MIBF₄

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离子液体C3MIBF4和C5MIBF4溶解焓的研究