Solubility and diffusivity of H2 and CO2 in the ionic liquid [bmim][PF6]

被引：19
|
作者：
Barghi, Seyed Hamed [1 ]
Tsotsis, Theodore T. [1 ]
Sahimi, Muhammad [1 ]
机构：
[1] Univ So Calif, Mork Family Dept Chem Engn & Mat Sci, Los Angeles, CA 90089 USA
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2015年 / 40卷 / 28期
关键词：
Hydrogen; Carbon dioxide; Solubility; Diffusivity; Ionic liquids; PRESSURE PHASE-BEHAVIOR; HYDROGEN PURIFICATION; CARBON-DIOXIDE; GAS SOLUBILITY; MEMBRANES; STORAGE; IMIDAZOLIUM; SEPARATION; HYSTERESIS;
D O I：
10.1016/j.ijhydene.2015.05.037
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We report on the measurement of the solubility and diffusivity of H-2 and CO2 in the ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF6]) over the temperature range 25 degrees C-55 degrees C and for pressures of up to 10 MPa. The data were obtained using a magnetic suspension balance, a gravimetric instrument that is capable of simultaneously and accurately measuring the gas solubility and diffusivity in such liquids. To our knowledge, this is the first time that the H-2 diffusivity has been measured in an ionic liquid. While solubility data for H-2 have been previously reported, they vary widely. The cause for such variations is discussed as well. The diffusivity data for both H-2 and CO2 follow an Arrhenius-like dependence on temperature. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：8713 / 8720
页数：8
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