$Cu SSZ-13$ zeolite catalyst on metallic foam support for SCR of NOx with ammonia: Catalyst layering and characterisation of active sites
PBN-AR
Instytucja
Wydział Inżynierii Materiałowej i Ceramiki (Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie)
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
Catalysis Today
ISSN
0920-5861
EISSN
1873-4308
Wydawca
Elsevier Science BV
Rok publikacji
2016
Numer zeszytu
Strony od-do
142--149
Numer tomu
268
Link do pełnego tekstu
Identyfikator DOI
Liczba arkuszy
0.57
Autorzy
(liczba autorów: 8)
Pozostali autorzy
+ 7
Słowa kluczowe
EN
NH3-SCR
in situ FTIR
Cu SSZ-13
CuZSM-5
in situ zeolite synthesis
short channel structures
metallic foam
Streszczenia
Język
EN
Treść
A particular aim of this work was to develop a method of catalyst layering on the surface of metallic catalyst carriers used in structured reactors. The CuSSZ-13 catalyst was chosen as a prospective catalyst for SCR of NOx converter for exhaust from biogas engines. For the first time in the literature the method of in situ synthesis CuSSZ-13 catalyst was elaborated and tested for precalcined Kanthal foam. The CuSSZ-13 catalyst prepared in such a way demonstrated very high activity in NH3-SCR of NO with ammonia and high hydrothermal stability in comparison with analogically prepared CuZSM-5 used as a reference catalyst. The active centres working during SCR at various temperatures were investigated by in situ FTIR experiments with NH3 and CO probe molecules. The structure-activity relationships found for catalyst working at high temperature show that the Lewis acidic Cu+ sites are available exclusively for NO and Brønsted acidic sites for NH3 sorption above 400 °C. Furthermore, high hydrothermal stability of the CuSSZ-13 catalyst is correlated to the favourable location of Al atoms in the zeolite lattice which prevents dealumination and also to the resulted from this stabilization of copper Cu+ active sites. © 2016 Elsevier B.V. All rights reserved.
Cechy publikacji
original article
peer-reviewed
Inne
System-identifier
idp:097498
CrossrefMetadata from Crossref logo
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