High-temperature surface tension and density measurements of 1-alkyl-3-methylimidazolium bistriflamide ionic liquids

被引：143

作者：

Tariq, Mohammad ^{[1
]}

Serro, Ana P. ^{[2
]}

Mata, Jose L. ^{[2
]}

Saramago, Benilde ^{[2
]}

Esperanca, Jose M. S. S. ^{[1
]}

Canongia Lopes, Jose N. ^{[1
,2
]}

Rebelo, Luis Paulo N. ^{[1
]}

机构：

[1] Univ Nova Lisboa, Inst Tecnol Quim & Biol, ITQB 2, P-2780901 Oeiras, Portugal

[2] Inst Super Tecn, Ctr Quim Estrutural, P-1049001 Lisbon, Portugal

来源：

FLUID PHASE EQUILIBRIA | 2010年 / 294卷 / 1-2期

关键词：

Ionic liquids; Density; Surface tension; Thermal expansion coefficient; EXTENDED PRESSURE RANGE; THERMODYNAMIC PROPERTIES; VAPOR-PRESSURE; TETRAFLUOROBORATE; DISTILLATION; VAPORIZATION; MIXTURES; WATER;

D O I：

10.1016/j.fluid.2010.02.020

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The surface tension and density of almost all members of the 1-alkyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amides family, [C(n)mim][Ntf(2)], with 2 <= n <= 14 were measured for the first time up to 532 K and 473 K, respectively. The large number of ionic liquids studied within this family and the broad interval of working temperature enabled us to show evidence for a thermodynamic anomaly in the thermal expansivity of these ionic liquids (minima in a p versus T). The minima themselves have never been witnessed before. The data in this extended temperature range also permitted us to discuss the location of hypothetical normal boiling and critical points. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：131 / 138

页数：8

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