Ιδρυματικό Αποθετήριο
Πολυτεχνείο Κρήτης
Πολυτεχνείο Κρήτης
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| URI | http://purl.tuc.gr/dl/dias/085BF4E2-13CF-4836-A069-22976220431F | - |
| Αναγνωριστικό | http://www.sciencedirect.com/science/article/pii/S0021951796902067 | - |
| Αναγνωριστικό | https://doi.org/10.1006/jcat.1996.0206 | - |
| Γλώσσα | en | - |
| Μέγεθος | 9 pages | en |
| Τίτλος | Electrochemical promotion by Na of the platinum-catalyzed reaction between CO and NO | en |
| Δημιουργός | Palermo Alejandra | en |
| Δημιουργός | Lambert Richard M. | en |
| Δημιουργός | Harkness Ian R. | en |
| Δημιουργός | Gentekakis Ioannis | en |
| Δημιουργός | Γεντεκακης Ιωαννης | el |
| Δημιουργός | Marina Olga | en |
| Δημιουργός | Vayenas, Constantinos G | en |
| Εκδότης | Elsevier | en |
| Περίληψη | The Pt-catalyzed reduction of NO by CO exhibits strong electrochemical promotion (EP) by backspillover Na supplied from β′′ alumina under appropriate conditions of temperature, gas composition, and catalyst potential. At high CO partial pressures (PCO) the EP effect is attenuated by CO island formation and limited availability of chemisorbed NO. At lowPCO, the CO + O reaction is limited by the low coverage of CO and the EP effect is again relatively small. In the intermediatePCOregime, Na pumping strongly accelerates the reaction: rate gains of up to 1300% for N2production, relative to the unpromoted rate are observed. This can be understood in terms of Na-induced dissociation of chemisorbed molecular NO, which is thought to be the reaction initiating step. The overall kinetic behavior and the dependence of N2/N2O selectivity on catalyst potential are in good accord with this hypothesis. Thus the EP system also provides direct information about the nature of the reaction mechanism under conditions of elevated pressure. | en |
| Τύπος | Peer-Reviewed Journal Publication | en |
| Τύπος | Δημοσίευση σε Περιοδικό με Κριτές | el |
| Άδεια Χρήσης | http://creativecommons.org/licenses/by/4.0/ | en |
| Ημερομηνία | 2015-10-30 | - |
| Ημερομηνία Δημοσίευσης | 1996 | - |
| Θεματική Κατηγορία | EP | en |
| Θεματική Κατηγορία | Electrochemical Promotion | en |
| Θεματική Κατηγορία | NO | en |
| Θεματική Κατηγορία | CO | en |
| Βιβλιογραφική Αναφορά | A. Palermo, R. M. Lambert, I. R. Harkness, I. V. Yentekakis, O. Marina and C.G. Vayenas, "Electrochemical promotion by Na of the platinum-catalyzed reaction between CO and NO", J. Catal., vol. 161, no. 1, pp. 471-479, Jun. 1996. doi:10.1006/jcat.1996.0206 | en |
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