离子液体[mmim]DMP-甲醇溶液热物性实验研究  

Experimental Study on the Thermal Properties of Ionic Liquids [mmim] DMP-Methanol Solution

作　　者：梁世强[1] 赵杰[2] 郭永献[1,3] 贾玲玲[1] 

机构地区：[1]中国科学院工程热物理研究所,北京100190 [2]中国科学院理化技术研究所,北京100190 [3]西安电子科技大学机电工程学院,陕西西安710071

出　　处：《工程热物理学报》2011年第3期441-444,共4页Journal of Engineering Thermophysics

基　　金：国家高科技发展计划(863)项目(No.2007AA05Z259);国家自然科学基金(No.50706053)

摘　　要：分别采用比重瓶、乌氏黏度计和DSC等设备实验测定了不同浓度的离子液体[mmim]DMP-甲醇溶液在293.15～353.15 K温度范围内的密度、黏度和定压比热容。结果表明:其密度、黏度均随离子液体含量的增大而增大,随温度的升高而降低,而比热容却相反;密度与温度的函数关系符合经典线性经验方程式;黏度可采用Arrhenius-like方程很好地关联预测;采用经验方程式对定压比热容随温度、摩尔分数的变化趋势进行了拟合与关联,相关系数可达0.9983。The picnometer,ubbelohde viscometer and DOC are used,and experimental measurements of the density,viscosity and specific heat capacity for ionic liquids[mmim]DMP-methanol solution are performed in the temperature range from 293.15 K to 353.15 K.The results suggest that the density and viscosity increase with the increase of the content of the ionic liquid,but decrease with the increase of the temperature.However,the trend of the specific heat capacity is on the contrary. The functional relation between the density and the temperature accords well with the classical linear empirical formula,and the specific heat capacity can be predicted well by using Arrhenius-like equation.The variation trends of the specific heat capacity are fitted with different temperature and the mole fraction by using empirical formula,and the correlation coefficient can get 0.9983.

关 键 词：离子液体 密度 黏度 比热容 

分 类 号：O621.2[理学—有机化学] TB612[理学—化学]