THERMODYNAMIC LIMITATIONS ON THE DYNAMIC BEHAVIOUR OF HETEROGENEOUS REACTING SYSTEMS.

I. G. Kevrekidis, R. Aris, L. D. Schmidt

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The dynamic behavior of a simple heterogeneous catalytic system is examined, and necessary and sufficient conditions for a lumped model to predict sustained oscillatory behavior are found. These conditions are equivalent to the system's exhibiting a possible thermodynamic phase transition. The compatibility of the asymptotic and thermodynamic stability conditions for the uniform steady states at the limit of adsorption-desorption equilibrium is discussed. It is shown that the asymmetric steady states resulting from phase separation are conceptually different from those caused by reaction anomalies. For a Bragg-Williams approximation to adsorbate interactions the functional dependence of the rate on the nonuniform surface coverage is established by use of the mean-field theory of inhomogeneous fluids.

Original languageEnglish (US)
Title of host publicationInstitution of Chemical Engineers Symposium Series
PublisherInst of Chemical Engineers (EFCE Event n 299)
Pages109-116
Number of pages8
Edition87
ISBN (Print)0852951760
StatePublished - Dec 1 1984

Publication series

NameInstitution of Chemical Engineers Symposium Series
Number87
ISSN (Print)0307-0492

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

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