离子液体在化工和能源领域应用研究中,其比热及热工特性尤为重要,然而目前相关的比热数据较缺乏.研究主要对离子液体[BMIM][BF4]及其水溶液的比热容进行了测定.测试系统采用耐驰DSC204HP低温高压差热仪,测试精度较高且稳定可靠.实验测试的温度范围为273.15K~423.15K,测试的离子液体摩尔浓度分别为1.0,0.0738,0.1374,0.2098,0.4433,0.6143.同时对[BMIM][BF4]＋H2O溶液的焓进行了计算,并对其单效吸收式制冷循环性能进行了分析.研究结果为离子液体的工业应用提供了可靠的比热容数据,也指出了[BMIM][BF4]＋H2O工质对作为吸收式制冷工质对的可行性和问题.
In recent years,the industrial application of ionic liquids became more and more attention,but the specific heat data is lack.In this paper,heat capacity properties of the ionic liquid [BMIM][BF4] and aqueous solution were measured with NETZSCH DSC204HP test system,the temperature range of experimental tests 273.15K ~ 423.15K,the molar concentration of aqueous solution were 1.0,0.0738,0.1374,0.2098,0.4433,0.6143.Meanwhile,[BMIM][BF4]＋H2O was analyzed as working pair of single-effect absorption refrigeration cycle.This article provides a reliable heat capacity data for the industrial application of ionic liquids,and also pointed out that [BMIM][BF4]＋H2O as working fluid for absorption refrigeration working pair inadequate.
参考文献
| [1] | 田涛,郑丹星,武向红,蒋翼然.室温离子液体[Emim]BF4及其水溶液体系的比热容测定[J].北京化工大学学报(自然科学版),2008(03):27-30. |
| [2] | Rile Ge;Christopher Hardacre;Johan Jacquemin .Heat Capacities of Ionic Liquids as a Function of Temperature at 0.1 MPa.Measurement and Prediction[J].Journal of Chemical and Engineering Data: the ACS Journal for Data,2008(9):2148-2153. |
| [3] | 左桂兰 .离子液体型热泵新工质的性质研究[D].大连理工大学,2009. |
| [4] | 王建召 .吸收式循环构型及含咪唑类离子液体工质对的研究[D].北京化工大学,2009. |
| [5] | 晏双华 .离子液体型新工质-[EMIM][DEP]+水/醇的研究[D].大连理工大学,2009. |
| [6] | Ki-Sub Kim;Seung-Yeob Park;Sukjeong Choi .Vapor Pressures of the l-Butyl-3-methylimidazolium Bromide+Water,l-Butyl-3-methylimidazolium Tetrafluoroborate+Water,and l-(2-Hydroxyethyl)-3-methylimidazolium Tetrafluoroborate+Water Systems[J].Journal of Chemical and Engineering Data: the ACS Journal for Data,2004(6):1550-1553. |
| [7] | 关婷婷,孙立,皇甫立霞,郭开华.离子液体[BMIM]BF4+H2O汽液相平衡实验研究[J].低温物理学报,2011(03):194-198. |
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