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Periodic capillary models of diffusion in porous solids

Gavalas, G. R. and Kim, S. (1981) Periodic capillary models of diffusion in porous solids. Chemical Engineering Science, 36 (7). pp. 1111-1122. ISSN 0009-2509.

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Periodic capillary networks are proposed as models for describing diffusion in porous solids. The capillary network is analyzed by means of the nodal concentration equations for a single unit cell and expressions are derived for the diffusional flux in terms of the macroscopic concentration gradient. Conditions for isotropy are derived and the validity of the smooth field assumption is discussed. The theory is illustrated with a macropore-micropore model of porous catalyst pellets and comparisons are made with an earlier capillary model.

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Gavalas, G. R.0000-0003-1468-6835
Additional Information:© 1981 Pergamon Press Ltd. Received 21 April 1980; accepted 27 January 1981.
Issue or Number:7
Record Number:CaltechAUTHORS:20151104-112517343
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61826
Deposited By: Ruth Sustaita
Deposited On:04 Nov 2015 21:19
Last Modified:03 Oct 2019 09:12

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