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The effect of adsorption on the effectiveness factor of catalyst pellets

✍ Scribed by Chieh Chu; O.A. Hougen

Publisher
Elsevier Science
Year
1962
Tongue
English
Weight
650 KB
Volume
17
Category
Article
ISSN
0009-2509

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✦ Synopsis

This paper develops the effectiveness factors of catalysts for two reaction models and shows that this factor is dependent not only upon size, shape, effective diffusivity and surface reaction velocity constant, but also upon the reaction model, surface coverage by adsorption, degree of conversion and surface concentration.

Because of the complex and uncertain nature of the effectiveness factor of porous catalyst pellets it is important in kinetic studies to use small pellets having an effectiveness factor of nearly unity so that the reaction rate per unit mass is nearly independent of catalyst size.

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