JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
Online ISSN : 1881-1299
Print ISSN : 0021-9592
GAS ADSORPTION ON ACTIVATED CARBONS WITH SIZE DISTRIBUTION OF MICROPORES
MOTOYUKI SUZUKIAKIYOSHI SAKODA
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1982 Volume 15 Issue 4 Pages 279-285

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Abstract

The Dubinin-Astakhov (D-A) equation is modified for adosrption of gases on microporous activated carbons with appreciable size distribution of micropores.
Parameters n and E involved in the D-A equation are assumed to vary with the ratio of micropore size to molecular size of adsorbate. Also, E is considered to be in proportion to the standard heat of vaporization of the adsorbate. The dependence of n and E on these characteristics is determined from adsorption data for carbon molecular sieves that have uniform micropores. Thus, once the size distribution function of micropores is given for a commercial activated carbon, adsorption equilibrium of any gas is predictable with the generalized D-A equation proposed here by accounting for the micropore size distribution.

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© The Society of Chemical Engineers, Japan
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