Acid and Catalytic Properties of MnOm-ZrO2 (M = Ca, Ba, Sm, Yb) Compositions
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
Reaction Kinetics and Catalysis Letters
ISSN: 0133-1736
, E-ISSN: 1588-2837
|
| Вых. Данные |
Год: 1998,
Том: 64,
Номер: 2,
Страницы: 337-342
Страниц
: 6
DOI:
10.1007/BF02475354
|
| Ключевые слова |
Acidity, Oxidative conversion of methane, Zirconia-based catalysts |
| Авторы |
Ivanova A.S.
1
,
Paukshtis E.A.
1
,
Sobyanin V.A.
1
,
Galvita V.V.
1
|
| Организации |
| 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.