NO reduction, CO and hydrocarbon oxidation over combustion synthesized Ag/CeO2 catalyst


Autoria(s): Bera, Parthasarathi; Patil, KC; Hegde, MS
Data(s)

2000

Resumo

The combustion technique produces ionically dispersed Ag on a nano-crystalline CeO2 surface. The catalysts thus produced were characterized by X-ray diffraction, transmission electron microscopy and X-ray photoelectron spectroscopy. Catalytic properties towards NO reduction, CO and hydrocarbon oxidation have been investigated using the temperature programmed reaction technique in a packed bed tubular reactor. These results are compared with alpha-Al2O3 supported finely divided Ag metal particles synthesized by the same method. Both oxidation and reduction reactions over Ag/CeO2 have been observed to occur at lower temperatures compared to Ag/Al2O3. The rate and turnover frequency of the NO+CO reaction over 1% Ag/CeO2 are 56.3 mu mol g(-1) s(-1) and 0.97 s(-1) at 225 degrees C respectively. Activation energy (E-a) values are 71 and 67 kJ mol(-1) for CO+O-2 and NO+CO reactions, respectively, over 1% Ag/CeO2 catalyst.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/32188/1/no.pdf

Bera, Parthasarathi and Patil, KC and Hegde, MS (2000) NO reduction, CO and hydrocarbon oxidation over combustion synthesized Ag/CeO2 catalyst. In: Physical Chemistry Chemical Physics, 2 (16). pp. 3715-3719.

Publicador

Royal Society of Chemistry

Relação

http://pubs.rsc.org/en/Content/ArticleLanding/2000/CP/b003908j

http://eprints.iisc.ernet.in/32188/

Palavras-Chave #Solid State & Structural Chemistry Unit #Inorganic & Physical Chemistry
Tipo

Journal Article

PeerReviewed