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Stability of an isothermal catalytic reaction with complex rate expression

✍ Scribed by Dan Luss; James C.M. Lee

Publisher: Elsevier Science
Year: 1971
Tongue: English
Weight: 578 KB
Volume: 26
Category: Article
ISSN: 0009-2509
DOI: 10.1016/0009-2509(71)80063-5

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✦ Synopsis

A new lumping technique for determining the stability of distributed systems described by a set of parabolic equations is developed. The method is used to investigate the stability characteristics of an isothermal reaction with a Langmuir-Hinshelwood rate expression occurring inside a catalytic slab. It is shown that when the diffusivities of the two reactants are quite different several pathological effects may occur. For example, a unique unstable steady state may exist for which the concentration profile continuously oscillates. These phenomena are likely to occur for certain hydrogenation and hydrogenolysis reactions which have complex rate expressions.

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