Preferential CO oxidation over Cu/CeO sub(2-x) catalyst: Internal mass transport limitation

The effect of internal mass transport limitation on the preferential CO oxidation in hydrogen-rich mixture over copper-cerium oxide catalyst in a form of pellets and washcoat in microchannel reactor is estimated. Internal effectiveness factor eta sub(CO) >0.8 in the optimum interval of reaction t...

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Bibliographic Details
Published in:Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2011-12, Vol.176-177, p.165-171
Main Authors: Potemkin, DI, Snytnikov, P V, Belyaev, V D, Sobyanin, V A
Format: Article
Language:English
Subjects:
Carbon monoxide
CATALYSTS
CERIUM ALLOYS (0 TO 50 CE)
Chemical engineering
Microchannels
Oxidation
PELLETS
Reactors
Transport
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Summary:The effect of internal mass transport limitation on the preferential CO oxidation in hydrogen-rich mixture over copper-cerium oxide catalyst in a form of pellets and washcoat in microchannel reactor is estimated. Internal effectiveness factor eta sub(CO) >0.8 in the optimum interval of reaction temperature (170-230 degree C) is reached if the pellet diameter and washcoat thickness do not exceed 100 and 20 mu m, respectively. Compared to conventional packed-bed reactor with catalyst pellets, microchannel catalytic washcoated reactor is more appropriate for practical use.
ISSN:1385-8947
DOI:10.1016/j.cej.2011.08.081