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Institutional Repository [SANDBOX]
Technical University of Crete
Technical University of Crete
EN
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EL
| URI | http://purl.tuc.gr/dl/dias/10CEEC83-261C-46A2-A99F-55F4E319DA80 | - |
| Identifier | http://www.srcosmos.gr/srcosmos/showpub.aspx?aa=11012 | - |
| Language | en | - |
| Title | In situ DRIFTS study of surface species formed over sodium promoted Pt/Al2O3 catalysts during the reduction of NO by C3H6” | en |
| Creator | Matsouka Vasiliki | en |
| Creator | Ματσουκα Βασιλικη | el |
| Creator | Koukiou S. | en |
| Creator | Konsolakis Michail | en |
| Creator | Κονσολακης Μιχαηλ | el |
| Creator | Yentekakis Ioannis.V. | en |
| Content Summary | The nature and the relative population of adsorbed species formed on the surface of un-promoted and sodium promoted Pt catalysts supported on γ-Al2O3 was investigated by using in situ DRIFT Spectroscopy, during the NO reduction by propene. Under steady-state reaction conditions, the surface of the un-promoted Pt/γ-Al2O3 catalyst is mainly covered by adsorbed hydrocarbon fragments, formates, acetates and cyanide species. In contrast, the surface of Na-promoted Pt(Na)/γ- Al2O3 catalysts is predominantly covered by NOx ad-species, carbonyls, cyanides and isocyanates, whereas no hydrocarbons fragments were detected under reaction conditions. The present results demonstrate that the strongly enhanced catalytic performance of Na-modified Pt(Na)/Al2O3 catalysts, can be attributed to the pronounced effect of alkalis on the hydrocarbon and NO chemisorption bonds, which in turn prevents self-poisoning of catalyst surface by strongly bonded hydrocarbon fragments and carboxylates. | en |
| Type of Item | Πλήρης Δημοσίευση σε Συνέδριο | el |
| Type of Item | Conference Full Paper | en |
| License | http://creativecommons.org/licenses/by-nc-nd/4.0/ | en |
| Date of Item | 2015-11-15 | - |
| Date of Publication | 2008 | - |
| Bibliographic Citation | V. Matsouka, S. Koukiou, M. Konsolakis, I.V. Yentekakis, “In situ DRIFTS study of surface species formed over sodium promoted Pt/Al2O3 catalysts during the reduction of NO by C3H6”, in Proc. Protection and Restoration of the Environment IX, 2008. | en |
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