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Rare behaviour of a catalyst pellet catalyst dynamics

✍ Scribed by K.R. Westerterp; R.A. Loonen; A. Martens

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 416 KB
Volume: 41
Category: Article
ISSN: 0009-2509
DOI: 10.1016/0009-2509(86)87200-1

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✦ Synopsis

Temperature overshoots and undershoots were found for a Pd on alumina Catalyst pellet in its course towards a new steady state after a change in concentration of one of the reactants ethylene or hydrogen. When cooling the pellet, aiter heat-up by reaction, with pure hydr0gen.a sudden temperature peak appears aPter a short time. A mathematical model is introduced, which can explain the over-and undershoots by slow ad-or desorption on the active sites of the Catalyst of one of the reactants. KEYWORDS Overheating of catalyst pellet, catalyst pellet temperature overshoot, catalyst dynamics. ethylene hydrogenation, palladium catalyst, slow adsorption on active sites. cooling of catalyst pellet, temperature undershoot.

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