Article | REF: J4025 V1

Calculation of catalytic reactors - Preliminary approach

Author: Jean-Léon HOUZELOT

Publication date: December 10, 2005

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4. Catalyst deactivation

This is an extremely important phenomenon in industrial practice, as the activity of a catalyst deteriorates as it is used. To account for this phenomenon, we define a quantity "a" which, from a formal point of view, defines the instantaneous activity of the catalyst by the ratio :

with :

r
 : 
speed at observation time
r...
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Catalyst deactivation