Synthesis of 1,3-Dimethylimidazolium Chloride and Volumetric Property Investigations of Its Aqueous Solution
Synthesis of 1,3-Dimethylimidazolium Chloride and Volumetric Property Investigations of Its Aqueous Solution
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DOI：
10.1007/s10765-009-0651-x
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发表时间：
2009-10-01
影响因子：
2.2
通讯作者：
Wu, X. H.
中科院分区：
文献类型：
--
作者：
Dong, L.;Zheng, D. X.;Wu, X. H.
通过考察溶剂的蒸汽压和离子液体(ILS)与溶剂的亲和力，提出了1，3-二甲基咪唑氯([MMIM]Cl)作为一种新型的吸收循环工质的可能性。采用高压反应釜，采用气-液相反应的方法，在348.15 K和0.7 Mpa的条件下合成了[MMIM]Cl。用数字振管密度计测量了293.15 K、298.15 K、303.15 K、308.15 K、313.15 K和318.15 K下质量分数为20%~90%的[MMIM]Cl水溶液的密度。研究了该体系的过剩体积、表观摩尔体积、偏摩尔体积和表观摩尔膨胀率，并讨论了阴阳离子的变化对几种IL水溶液密度的影响。
By investigating the vapor pressure of the solvent and the affinity between ionic liquids (ILs) and the solvent, it is proposed that 1,3-dimethylimidazolium chloride ([Mmim]Cl) has the potential to be used as a novel absorbent species with the absorption cycle working fluid. Adopting a high-pressure reaction kettle, the method of gas-liquid phase reaction was used to synthesize [Mmim]Cl under the conditions of 348.15 K and 0.7 MPa. The densities of [Mmim]Cl aqueous solutions were measured for mass fractions in the range from 20% to 90% at 293.15 K, 298.15 K, 303.15 K, 308.15 K, 313.15 K, and 318.15 K with a digital vibrating-tube densimeter. The excess volume, the apparent molar volume, the partial molar volume, and the apparent molar expansibility of this system were investigated, and the influences of variations of the cation and anion on the density of several IL aqueous solutions are discussed.