Adsorption dynamics of carbon dioxide on a carbon molecular sieve 5A

被引:42
作者
Rutherford, SW [1 ]
Do, DD [1 ]
机构
[1] Univ Queensland, Dept Chem Engn, St Lucia, Qld 4072, Australia
基金
澳大利亚研究理事会;
关键词
adsorption; adsorption properties; diffusion; transport properties;
D O I
10.1016/S0008-6223(99)00269-9
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
Measurement of batch adsorption of carbon dioxide with a carbon molecular sieve (commercially manufactured Takeda 5A) indicates no molecular sieving action but instead, micropore diffusion is shown to be rate limiting the adsorption dynamics. Permeation measurement through the same pellets is also performed and steady state analysis indicates there is negligible adsorbed phase transport along the pellet and that the gas phase diffusion process is a combined Knudsen and viscous mechanism. Batch adsorption and permeation methods are critically compared for their utility in determining which mass transfer processes are relevant and the conditions under which each technique is most useful are given. (C) 2000 Elsevier Science Ltd. All rights reserved.
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页码:1339 / 1350
页数:12
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