Densities and Viscosities of 1-butyl-3-methylimidazolium Hexafluorophosphate [bmim][PF6] ＋ CO2 Binary System： Determination and Correlation

• Published in: Chinese journal of chemical engineering Vol. 21; no. 11; pp. 1284 - 1290
• Main Author: 乔燕 闫方友 夏淑倩 马沛生
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.11.2013
• Subjects: [bmim][PF6]; Binary systems; Carbon dioxide; Chemical engineering; CO2; Correlation; Density; Deviation; falling-body viscometer; ionic liquid; Liquids; Viscosity; 二元体系; 六氟磷酸盐; 密度; 测定; 甲基咪唑; 离子液体; 粘度计; ionic liquid; falling-body viscometer; carbon dioxide; viscosity; [bmim][PF6]
• ISSN: 1004-9541; 2210-321X
• DOI: 10.1016/S1004-9541(13)60622-9

A gas-dissolving device was designed and connected to the falling-body viscometer, which was used to determine the viscosities of liquids in our lab before. The equipment can be used to determine the gas composition, the densities and viscosities of the solution at the same time. The densities and viscosities of [bmim][PF6] ＋ CO2 binary system were determined in the temperature range of 313.2 to 413.2 K and pressure range of 5.0 to 25.0 MPa by the equipment. Then the viscosities of [bmim][PF6] ＋ CO2 binary system at constant temperature, constant pressure, and different temperature and pressure were correlated, respectively. For the correlation at different tempera- ture and different t3ressure for different concentration mixtures the average relative deviation ARD is 0.037.