On the Oxygen Effect in Nitric Oxide Reduction by Methane over Co/ZSM-5
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Conference |
3 International conference on unsteady-state processes in catalysis
30 Jun - 3 Jul 1998
,
St. Petersburg
|
| Journal |
Chemical Engineering Science
ISSN: 0009-2509
, E-ISSN: 1873-4405
|
| Output data |
Year: 1999,
Volume: 54,
Number: 20,
Pages: 4327-4335
Pages count
: 9
DOI:
10.1016/S0009-2509(99)00104-9
|
| Tags |
Co-ZSM-5, DRIFT, Methane activation, NO reduction, NO2(δ+) species, Transient studies |
| Authors |
Pinaeva L.G.
1
,
Sadovskaya E.M.
1
,
Suknev A.P.
1
,
Goncharov V.B.
1
,
Sadykov V.A.
1
,
Balzhinimaev B.S.
1
,
Décamp T.
2
,
Mirodatos C.
2
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis, pr. Lavrentieva, 5, 630090, Novosibirsk, Russia
|
| 2 |
Institut de Recherches sur la Catalyse, 2 av. A. Einstein, F-69626 Villeurbanne Cédex, France
|
|
The catalytic reduction of NO by CH4 over Co/ZSM-5 zeolite is studied by means of transient in situ DRIFT, SSITK and TAP analyses. Co ions located at the interface of Co clusters and zeolite are found to react with NO in the presence of oxygen to form anchored NOδ+2 species stabilized under reaction conditions. These species form the main active sites for activating methane molecule. Two ways of CO2 formation from the same intermediate including fragments of both NOx and partially dehydrogenated CH4 molecule are proposed in the mechanistic scheme of the reaction.