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EnglishThe 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.
KINETICS OF THE PREFERENTIAL OXIDATION OF CO OVER CuO/CeO2 CATALYSTS IN H2-RICH GASES / Caputo T.; Lisi L.; Pirone R.; Russo G.. - In: INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH. - ISSN 0888-5885. - STAMPA. - 46:21(2007), pp. 6793-6800.
| Titolo: | KINETICS OF THE PREFERENTIAL OXIDATION OF CO OVER CuO/CeO2 CATALYSTS IN H2-RICH GASES |
| Autori: | |
| Data di pubblicazione: | 2007 |
| Rivista: | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1021/ie0616951 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| IEC 2007.pdf | 2. Post-print / Author's Accepted Manuscript | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
http://hdl.handle.net/11583/2496672
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