Szczegóły publikacji
Opis bibliograficzny
Influence of $SO_{2}$ poisoning on catalytic performance of modified zeolites in selective catalytic reduction of nitrogen oxides with ammonia ($NH_{3}-SCR$) / Agnieszka SZYMASZEK, Bogdan SAMOJEDEN, Monika MOTAK // W: Contemporary problems of power engineering and environmental protection 2020 [Dokument elektroniczny] / ed. by Krzysztof Pikoń, Magdalena Bogacka. — Wersja do Windows. — Dane tekstowe. — Gliwice : Silesian University of Technology, 2021. — e-ISBN: 978-83-950087-9-5. — S. 15–25. — Wymagania systemowe: Adobe Reader. — Tryb dostępu: https://drive.google.com/file/d/1V5BXW3bvlzHqNUjupnxYpxkuIVIG... [2021-03-08]. — Bibliogr. s. 23–25, Abstr. — Materiały z 8th Environmental protection and energy conference : 11th December 2020, online
Autorzy (3)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 132876 |
|---|---|
| Data dodania do BaDAP | 2021-06-08 |
| Rok publikacji | 2021 |
| Typ publikacji | fragment monografii pokonferencyjnej |
| Otwarty dostęp |  |
| Wydawca | Politechnika Śląska |
Abstract
Natural zeolite of heulandite framework (clinoptilolite) was modified with iron, promoted with copper, and tested as the catalyst for selective catalytic reduction of nitrogen oxides with ammonia (NH3-SCR). Additionally, the materials were treated with SO2 in order to investigate their resistance against poisoning. XRD analysis confirmed that copper can act as a structural promoter, due to the fact that crystalline structure of the zeolite can be restored after poisoning and regeneration. Nevertheless, the formation of CuSO4 in the presence of SO2 inhibited conversion of NO over the poisoned zeolite modified with Fe and Cu. It was found that when iron-doped clinoptilolite was poisoned with SO2 and regenerated, NO conversion increased. The effect can be correlated with the formation of new Lewis and Brönsted acid centers and changes in their ratio, which facilitated the adsorption of ammonia and shifted the temperature window of the catalyst to lower values.
