Three primary kinetic characteristics observed in a pulse-response TAP experiment

S. O. Shekhtman, N. Maguire, A. Goguet, R. Burch, C. Hardacre

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The state-by-state transient screening approach based on a pulse-response thin-zone TAP experiment is further developed whereby single-pulse kinetic tests are treated as small perturbations to catalyst compositions and analyzed using integral method of moments. Results on three primary kinetic characteristics, termed basic kinetic coefficients, are presented. These three coefficients were introduced as main observables from experimentally measured TAP-responses in a kinetic-model-free manner. Each was analytically determined from moments of responses with no assumption about the detailed kinetic model. In this paper, the inverse question of how well these coefficients represent the time evolution of the observed responses is addressed. Sets of three basic kinetic coefficients are calculated from model and experimental responses and these calculated values are used to generate 3-coefficient curves in a kinetic-model-free manner. The comparison of these 3-coefficient curves with original responses shows that three basic kinetic coefficients can be sufficient to describe the observed kinetics of exit flow time dependencies with no assumption regarding the detailed kinetic model.

    Original languageEnglish
    Pages (from-to)255-260
    Number of pages6
    JournalCatalysis Today
    Volume121
    Issue number3-4
    DOIs
    Publication statusPublished - 30 Mar 2007

    Keywords

    • Catalyst characterization
    • Kinetics
    • Primary kinetic characteristics
    • Pulse-response
    • TAP-experiment
    • Thin-zone

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