Journal
SEPARATION AND PURIFICATION TECHNOLOGY
Volume 116, Issue -, Pages 95-100Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.seppur.2013.05.020
Keywords
Water vapor adsorption; Capillary condensation; Isotherm model
Categories
Funding
- Air Products and Chemicals, Inc.
- University of Science & Technology Beijing
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Four comprehensive isotherm expressions are proposed for various water vapor adsorption mechanisms. Water vapor adsorption in micropores and on macropore walls is described using the Langmuir and Freundlich models, respectively. Water vapor condensation in the pore core volume of macropores is modeled by assuming that the effective pore size follows a Gaussian and uniform distribution. These expressions are used to fit water adsorption data on various kinds of alumina. The results show that the proposed water vapor adsorption isotherm expressions fit the water adsorption data well. (c) 2013 Elsevier B.V. All rights reserved.
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