Acid and Catalytic Properties of MnOm-ZrO2 (M = Ca, Ba, Sm, Yb) Compositions
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Journal |
Reaction Kinetics and Catalysis Letters
ISSN: 0133-1736
, E-ISSN: 1588-2837
|
| Output data |
Year: 1998,
Volume: 64,
Number: 2,
Pages: 337-342
Pages count
: 6
DOI:
10.1007/BF02475354
|
| Tags |
Acidity, Oxidative conversion of methane, Zirconia-based catalysts |
| Authors |
Ivanova A.S.
1
,
Paukshtis E.A.
1
,
Sobyanin V.A.
1
,
Galvita V.V.
1
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis, Novosibirsk 630090, Russia
|
|
Influence of the nature of MnOm in zirconia-based systems MnOm−ZrO2 (M=Ca, Ba, Sm, Yb) of approximately equimolar composition on their acid and catalytic properties in oxidative conversion of methane (OCM) have been studied. The surface of MnOm−ZrO2 systems has been found to contain practically no Brönsted acid sites. Lewis acid sites are represented by three types of L-sites, their total concentration per m2 decreasing in the series (Zr, Ca)O2>(Zr, Sm)O2>(Zr, Yb)O2. Activity of the catalysts in the OCM reaction is proportional to the specific surface area. Their selectivity to ΣC2 hydrocarbons increases in the series (Zr, Ca)O2<(Zr, Sm)O2<(Zr, Yb)O2.