Measurement of high pressure densities and atmospheric pressure viscosities of alkyl phosphate anion ionic liquids and correlation with the ε*-modified Sanchez-Lacombe equation of state

被引：18
|
作者：
Hiraga, Yuya [1 ]
Goto, Musashi [2 ]
Sato, Yoshiyuki [1 ]
Smith, Richard L., Jr. [1 ,2 ]
机构：
[1] Tohoku Univ, Res Ctr Supercrit Fluid Technol, Aoba Ku, Aramaki Aza Aoba 6-6-11, Sendai, Miyagi 9808579, Japan
[2] Tohoku Univ, Grad Sch Environm Studies, Aoba Ku, Aramaki Aza Aoba 6-6-11, Sendai, Miyagi 9808579, Japan
来源：
JOURNAL OF CHEMICAL THERMODYNAMICS | 2017年 / 104卷
关键词：
Ionic liquid; Density; Viscosity; Equation of state; VOLUMETRIC PROPERTIES; 1-ETHYL-3-METHYLIMIDAZOLIUM ETHYLSULFATE; LIGNOCELLULOSIC BIOMASS; CARBON-DIOXIDE; 200; MPA; DISSOLUTION; CELLULOSE; TEMPERATURE; BIS(TRIFLUOROMETHYLSULFONYL)IMIDE; METHYLSULFATE;
D O I：
10.1016/j.jct.2016.09.013
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
High pressure densities up to 200 MPa from 313 to 393 K and atmospheric pressure viscosities from 293 to 373 K for two alkyl phosphate anion ionic liquids, 1-ethyl-3-methylimidazolium dimethylphosphate ([emim][DMP]) and 1-butyl-3-methylimidazolium dimethylphosphate ([ bmim][DMP]), are reported. Several forms of the Tait equation were applied and all forms could correlate the data to within 0.03% average relative deviation (ARD). The derivative properties calculated had specific trends for the ionic liquids. The epsilon*-modified Sanchez-Lacombe equation of state could correlate the data to within an ARD of 0.07%, and the deviations were lower than those of the original Sanchez-Lacombe equation of state (0.19%). The improvement by epsilon*-modified Sanchez-Lacombe equation of state can be attributed its assumed close-packed density structure at low temperature. (C) 2016 Elsevier Ltd.
引用
收藏
页码：73 / 81
页数：9
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