Remarkable promoting effect of rhodium on the catalytic performance of Ag/Al2O3 for the selective reduction of NO with decane

Autor:	Kazuhito Sato, Masaaki Haneda, Yoshiaki Kintaichi, Hideaki Hamada, Tomohiro Yoshinari
Rok vydání:	2003
Předmět:	Chemistry Process Chemistry and Technology Inorganic chemistry chemistry.chemical_element Decane Reaction intermediate Isocyanate Catalysis Rhodium chemistry.chemical_compound Elementary reaction Selective reduction Spectroscopy General Environmental Science Nuclear chemistry
Zdroj:	Applied Catalysis B: Environmental. 44:67-78
ISSN:	0926-3373
Popis:	The addition of small amounts of rhodium enhanced the activity of Ag/Al 2 O 3 catalyst for the selective reduction of NO with decane at low temperatures. The Rh-promoted Ag/Al 2 O 3 showed its high performance even in the presence of low concentrations of SO 2 . Based on the catalytic activity for elementary reactions, it was suggested that the role of added rhodium is to enhance the reaction between NO x and decane-derived species, leading to NO reduction. Catalyst characterization by UV-Vis spectroscopy indicated that the major silver species on Rh-promoted Ag/Al 2 O 3 is Ag n δ + clusters, which would be responsible for the high activity. FT-IR measurements revealed that the formation rate of isocyanate species, which is a major reaction intermediate, is higher on Rh-promoted Ag/Al 2 O 3 .
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5c87c98120e9745ee7b7f8cab72f4027 https://doi.org/10.1016/s0926-3373(03)00020-1 Zobrazit plný text záznamu Full Text from ScienceDirect