On the Role of Oxygen in the Reaction of NO Reduction by NH3 over Monolayer V2O5-TiO2 Catalyst
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Journal |
Journal of Molecular Catalysis A: Chemical
ISSN: 1381-1169
|
| Output data |
Year: 1996,
Volume: 112,
Number: 1,
Pages: 115-124
Pages count
: 10
DOI:
10.1016/1381-1169(96)00196-3
|
| Tags |
IR spectroscopy, SCR reaction, Transient response technique, Vanadia monolayer |
| Authors |
Pinaeva L.G.
1
,
Suknev A.P.
1
,
Budneva A.A.
1
,
Paukshtis E.A.
1
,
Bal'zhinimaev B.S.
1
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis
|
|
Funding (2)
|
1
|
International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union
|
93-3244
|
|
2
|
Президиум СО РАН
|
|
The selective catalytic reduction of NO by NH3 over monolayer V2O5-TiO2 catalyst has been investigated by transient response technique and IR spectroscopy. Ammonia adsorption-desorption processes on the catalyst surface proceed with participation of both Brønsted and Lewis acid sites. Sharp ammonia desorption caused by vanadia oxidation was observed in the reaction of O2 and NO + O2 flows with ammonia treated catalyst. This phenomenon results in the increase of the reaction rate. The reasonable mechanism of oxygen effect on the reaction rate is proposed.