Dissemin is shutting down on January 1st, 2025

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Elsevier, Chemical Engineering Science, 4(56), p. 1317-1325

DOI: 10.1016/s0009-2509(00)00354-7

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Determination of kinetic expressions from the frequency response of a catalytic reactor — theoretical and experimental investigations

Journal article published in 2001 by Abdul R. Garayhi, Abdul R. Garayhi, Frerich J. Keil
This paper is available in a repository.
This paper is available in a repository.

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Abstract

A new technique is presented for the investigation of non-stationary reaction systems. Reliable quantitative information is obtained for the description of non-stationary operation. A detailed description of the reaction mechanism is possible and different mechanisms with the same steady-state behavior can be discriminated. Two models for the evaluation are presented, an analytical expression for a fast parameter determination and a rigorous approach for the determination of the elementary kinetic expressions. The new technique is used for the investigation of the total combustion of diluted methane on a Pd-support catalyst. A Langmuir–Hinshelwood mechanism was found, a Eley–Rideal mechanism could be excluded. The detailed chemical mechanism is presented and kinetic constants for the elementary steps are determined.