Abstrakt
In the present work the results of the investigations on dead zone formation conditions in catalyst
pellet are discussed. A new, simple method of determining the types of kinetic equations for which
such a zone can appear was developed on the basis of simple mathematical transformations. It was
shown that: (i) pellet geometry has no influence on necessary conditions of the origination of dead
zone (ii) only driving-force term (in the sense of Langmuir-Hinshelwood-Hougen-Watson kinetic
approach) decides if a dead zone is formed. A new algorithm which allows fast and precise evaluation
of critical Thiele modulus Fcrit (in a catalyst pellet for F>Fcrit the dead zone appears) was proposed
and tested.
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