6533b85bfe1ef96bd12ba85d

RESEARCH PRODUCT

HC-SCR of NOx over Ag/alumina: a combination of heterogeneous and homogeneous radical reactions?

E. A. PopovLars-eric LindforsJussi ElorantaD. Yu. MurzinKari EränenFredrik KlingstedtKalle Arve

subject

ChemistryCyanogenRadicalCatalyst supportInorganic chemistryMatrix isolationGeneral ChemistryHeterogeneous catalysisIsocyanateCatalysisCatalysischemistry.chemical_compoundOrganic chemistryNOx

description

Matrix isolation combined with EPR and FT-IR technique at low temperature has been used to study the gas phase species involved in HC-SCR over a highly active Ag/alumina catalyst. A combination of heterogeneous and homogeneous (radical) reactions is proposed to take place over a Ag/alumina catalyst during HC-SCR. Radicals of low molecular weight were trapped in a growing argon matrix behind the Ag/alumina catalyst. In the same matrix, cyanogen isocyanate was detected and is suggested to be a key intermediate for the formation of amines and ammonia via the hydrolysis of isocyanate species.

yearjournalcountryeditionlanguage
2005-02-01Catalysis Today
https://doi.org/10.1016/j.cattod.2004.10.017