Kinetics of the preferential oxidation of CO over CuO/CeO2 catalysts in H2-rich gases (Articolo in rivista)

Type
Label
  • Kinetics of the preferential oxidation of CO over CuO/CeO2 catalysts in H2-rich gases (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/ie0616951 (literal)
Alternative label
  • T. Caputo T; L. Lisi; R. Pirone; G. Russo (2007)
    Kinetics of the preferential oxidation of CO over CuO/CeO2 catalysts in H2-rich gases
    in Industrial & engineering chemistry research; ACS, American chemical society, Washington, DC (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • T. Caputo T; L. Lisi; R. Pirone; G. Russo (literal)
Pagina inizio
  • 6793 (literal)
Pagina fine
  • 6800 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 46 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Istituto di Ricerche sulla Combustione, CNR DIPARTIMENTO di INGEGNERIA CHIMICA, UNIVersità FEDERICO II (literal)
Titolo
  • Kinetics of the preferential oxidation of CO over CuO/CeO2 catalysts in H2-rich gases (literal)
Abstract
  • The influence of reaction parameters such as temperature, contact time, and O2, CO, H2, CO2, and H2O partial pressures on the catalytic performances of 4 wt % CuO/CeO2 in the CO-PROX process (the preferential oxidation of CO) has been investigated in a fixed-bed reactor. Catalyst appears very active (light-off at 70 °C) and selective; reaction kinetics is weakly depressed by CO2 and H2O and not significantly increased with increasing O2 concentration, while the reaction order in CO is variable with temperature ranging from values <1 up to 110 °C and >1 at higher temperatures. A power-law rate equation fitted the experimental data under typical CO-PROX conditions in order to evidence the lower activation energy of the catalytic oxidation of CO with respect to H2. A Langmuir-Hinshelwood type reaction rate is able to describe the catalytic behavior in the whole field of experimental conditions explored. (literal)
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