Dependence against Temperature and Pressure of the Isobaric Thermal Expansivity of Room Temperature Ionic Liquids

被引：34

作者：

Navia, Paloma ^{[1
]}

Troncoso, Jacobo ^{[1
]}

Romani, Luis ^{[1
]}

机构：

[1] Fac Ciencias Ourense, Dept Fis Aplicada, Orense 32004, Spain

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2010年 / 55卷 / 02期

关键词：

THERMODYNAMIC PROPERTIES; VAPOR-PRESSURE; DENSITIES; STATE;

D O I：

10.1021/je900482x

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The isobaric thermal expansivity alpha(p) in the temperature and pressure intervals of (278.15 to 348.15) K and (5 to 50) MPa is reported for an assorted set of room temperature ionic liquids (RTILs) using a calorimetric method with an uncertainty of 2 %. The RTILs were selected to represent some of the most widely studied anions and cations; 1-butyl-3-methylpyridinium tetrafluoroborate [C(4)mpyr][BF(4)], 1-ethyl-3-methylimidazolium tetrafluoroborate [C(2)mim][BF(4)], 1-hexyl-3-methylimidazolium tetrafluoroborate [C(6)mim][BF(4)], 1-octyl-3-methylimidazolium tetrafluoroborate [C(8)mim][BF(4)], 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [C(2)mim][NTf(2)], and 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [C(6)mim][NTf(2)] are analyzed. The same general trends were obtained for the studied liquids, although differences are found both in the magnitude and in the alpha(p) behavior against temperature and pressure.

引用

页码：595 / 599

页数：5

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