摘要
新型功能性离子液体[emim]Ac吸收CO_2性能良好,但物性研究匮乏。在298.15—338.15 K温度范围内测定了离子液体[emim]Ac的黏度和表面张力及308.15—428.15 K温度范围内的比热容。结果表明:当压力一定时,离子液体[emim]Ac的黏度和表面张力均随温度的升高逐渐减小;比热容随温度的升高先减小后逐渐增大;分别采用Litovitz方程和Eotvos方程进行黏度、表面张力数据的关联,比热容与温度的关联式符合温度的N次函数,得出平均相对偏差分别为:0.04%,1.11%,3.53%,理论关联与实验测定结果一致。通过研究补充了离子液体[emim]Ac的相关物性,验证了模型关联对离子液体基础物性关联的可行性。
Novel functional ionic liquid[emim]Ac has excellent performance on CO 2 absorption but lacks physical properties.The viscosity and surface tension of the ionic liquid[emim]Ac within the temperature range of 298.15-338.15 K and the specific heat capacity within the temperature range of 308.15-428.15 K were measured.The results show that the viscosity and surface tension of the ionic liquid[emim]Ac gradually decrease with increasing temperature when the pressure is constant,and the specific heat capacity first decreases and then increases with the increasing temperature.The Litovitz equation and the Eotvos equation are used to correlate the viscosity and surface tension data respectively.The correlation between specific heat capacity and temperature is in accordance with the N-th order function of temperature,and the average relative deviations are 0.04%,1.11%,and 3.53%,respectively.The theoretical correlation results are consistent with experimental results.The study complements the basic physical properties of ionic liquids[emim]Ac and verifies the feasibility by using models to correlate the physical properties of ionic liquids.
作者
何丽娟
马文清
孙尚志
李松波
刘素霞
HE Li-juan;MA Wen-qing;SUN Shang-zhi;LI Song-bo;LIU Su-xia(College of Environment and Energy,InnerMongolia University of Science and Technology,Baotou 014010,Inner Mongolia,China;College of Chemistry and Chemical Engineering,InnerMongolia University of Science and Technology,Baotou 014010,Inner Mongolia,China)
出处
《化学工程》
CAS
CSCD
北大核心
2019年第3期40-44,共5页
Chemical Engineering(China)
基金
国家自然科学基金资助项目(51566014)
内蒙古自治区自然科学基金项目(2015MS0547)
关键词
[emim]Ac
黏度
表面张力
比热容
实验测定
模型关联
[emim]Ac
viscosity
surface tension
specific heat capacity
experimental measurement
model correlation
