Structural snapshots of the SCR reaction mechanism on Cu-SSZ-13

The structure of copper sites in Cu-SSZ-13 during NH3-SCR was unravelled by a combination of novel operando X-ray spectroscopic techniques. Strong adsorption of NH3 on Cu, its reaction with weakly adsorbed NO from the gas phase, and slow re-oxidation of Cu(I) were proven. Thereby the SCR reaction me...

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Published inChemical communications (Cambridge, England) Vol. 51; no. 44; pp. 9227 - 9230
Main Authors Günter, Tobias, Carvalho, Hudson W P, Doronkin, Dmitry E, Sheppard, Thomas, Glatzel, Pieter, Atkins, Andrew J, Rudolph, Julian, Jacob, Christoph R, Casapu, Maria, Grunwaldt, Jan-Dierk
Format Journal Article
LanguageEnglish
Published England 04.06.2015
Subjects
Adsorption
Copper
Gas phases
Iron
Reaction mechanisms
Spectroscopy
X-rays
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Summary:The structure of copper sites in Cu-SSZ-13 during NH3-SCR was unravelled by a combination of novel operando X-ray spectroscopic techniques. Strong adsorption of NH3 on Cu, its reaction with weakly adsorbed NO from the gas phase, and slow re-oxidation of Cu(I) were proven. Thereby the SCR reaction mechanism is significantly different to that observed for Fe-ZSM-5.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1359-7345
1364-548X
DOI:10.1039/c5cc01758k