Szczegóły publikacji
Opis bibliograficzny
NO conversion with $NH_{3}$ by catalysts derived from Ti-MWW layered zeolites with tailored porosity / Aleksandra JANKOWSKA, Klaudia Fidowicz, Małgorzata Rutkowska, Andrzej Kowalczyk, Michal Mazur, Lucjan Chmielarz // Journal of Physical Chemistry . C ; ISSN 1932-7447. — 2025 — vol. 129 iss. 45, s. 20234–20246. — Bibliogr. s. 20245–20246, Abstr. — Publikacja dostępna online od: 2025-11-05. — A. Jankowska – dod. afiliacja: Jagiellonian University in Kraków, Faculty of Chemistry
Autorzy (6)
- AGHJankowska Aleksandra
- Fidowicz Klaudia
- Rutkowska Małgorzata
- Kowalczyk Andrzej
- Mazur Michał
- Chmielarz Lucjan
Dane bibliometryczne
| ID BaDAP | 164958 |
|---|---|
| Data dodania do BaDAP | 2026-01-12 |
| Tekst źródłowy | URL |
| DOI | 10.1021/acs.jpcc.5c06118 |
| Rok publikacji | 2025 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Physical Chemistry, C |
Abstract
Acid-treated Ti-MCM-22 zeolite and its micromesoporous derivatives, ITQ-2-A and MCM-36-A, were hydrothermally synthesized and then modified with copper cations by the ion-exchange method. The samples were characterized with respect to their physicochemical properties, including composition (ICP-OES), structure (XRD, STEM, UV-vis DRS), texture (low-temperature N2-sorption), surface acidity (NH3-TPD), and copper reducibility (H2-TPR). Cu-functionalized zeolites showed enhanced catalytic activity compared to commercial V2O5-TiO2 catalysts. They were found to be active and selective catalysts for the NH3-SCR process, operating effectively in the range of 200-325 degrees C. NH3-SCR activity strongly depended on the opening of the framework, indicating the micromesoporous structure as an important factor influencing improved NO conversion with ammonia. The formation of NO2, essential for the fast-SCR process, was identified as a crucial step in the reaction mechanism responsible for the low-temperature reduction of nitrogen(II) oxide with ammonia.
