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NO ions as IR probes for the location of OH groups and Na ions in main channels and side pockets of mordenite |
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| Authors: | Carlos Henriques, Olivier Marie, Fr d ric Thibault-Starzyk,Jean-Claude Lavalley |
| Affiliation: | a Departamento de Engenharia Química, Instituto Superior Técnico, Lisboa 1049-001, Portugal b Laboratoire Catalyse & Spectrochimie, CNRS — Institut des Sciences de la Matiére et du Rayonnement, 6 boulevard Marechal Juin, F-14050 Caen Cedex, France |
| Abstract: | NO+, generated from NO and O2, is an infrared probe for the differentiation of Brønsted sites in the main channels and side pockets of mordenites, and for the location and accessibility of sodium ions in the structure. Na+ ions in cationic positions in the main channels are replaced by NO+, and sodium nitrate is formed. The band assignment was checked by isotopic experiments. |
| Keywords: | Infrared Mordenite Nitrosonium Side pockets DeNOx |
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