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

被引：20

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

页码：8713 / 8720

页数：8

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