A Monte Carlo simulation study of the ionic liquid 1-n-butyl-3-methylimidazolium hexafluorophosphate:: liquid structure, volumetric properties and infinite dilution solution thermodynamics of CO2

被引:93
作者
Shah, JK [1 ]
Maginn, EJ [1 ]
机构
[1] Univ Notre Dame, Dept Chem & Biomol Engn, Notre Dame, IN 46556 USA
关键词
molecular simulation; ionic liquids; gas absorption; Monte Carlo; forcefield; Henry's constant;
D O I
10.1016/j.fluid.2004.06.027
中图分类号
O414.1 [热力学];
学科分类号
摘要
A Monte Carlo simulation study is performed on the ionic liquid 1-n-butyl-3-methylimidazolium hexafluorophosphate. A modified united atom forcefield is developed for the ionic liquid. Volumetric properties such as density, isothermal compressibility and volume expansivity are computed at temperatures ranging from 298 to 343 K. Henry's constants and infinite dilution enthalpy and entropy of absorption are computed for CO2 in the ionic liquid. In addition, local structural information is obtained from radial distribution function analysis. Comparison is made between calculated properties and available experimental data. The performance of the new forcefield is assessed by comparison with two other forcefields developed for this compound. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:195 / 203
页数:9
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