Nickel Catalysts Based on Porous Nickel for Methane Steam Reforming
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Переводная
|
| Журнал |
Kinetics and Catalysis
ISSN: 0023-1584
, E-ISSN: 1608-3210
|
| Вых. Данные |
Год: 2008,
Том: 49,
Номер: 3,
Страницы: 428-434
Страниц
: 7
DOI:
10.1134/S0023158408030178
|
| Авторы |
Sabirova Z.A.
1
,
Danilova M.M.
1
,
Zaikovskii V.I.
1
,
Kuzin N.A.
1
,
Kirillov V.A.
1
,
Krieger T.A.
1
,
Meshheryakov V.D.
1
,
Rudina N.A.
1
,
Brizitskii O.F.
2
,
Khrobostov L.N.
2
|
| Организации |
| 1 |
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
|
| 2 |
All-Russia Research Institute of Experimental Physics, Russian Federal Nuclear Center, Sarov, Nizhegorodskaya oblast, 607200 Russia
|
|
The influence of synthesis conditions on the phase composition and texture of porous nickel supports
as plates with a magnesium oxide underlayer were investigated by X-ray diffraction, low-temperature
nitrogen absorption, and electron microscopy combined with X-ray microanalysis. Nickel catalysts supported
on these plates were studied. Thermal treatment of Mg(NO3)2 in nitrogen yields a magnesium oxide underlayer
with a small specific surface area (support I). The replacement of nitrogen with hydrogen leads to a larger surface
area (support II). The formation of MgO is accompanied by the incorporation of Ni2+ cations from the
oxide film into the underlayer. Upon subsequent reduction with hydrogen or under the action of the reaction
medium, these cations form fine crystallites of nickel. The supports having an oxide underlayer show a higher
activity in methane steam reforming than the initial metallic nickel. Nickel catalysts on supports I and II show
similar activities. The activity of the catalysts was stable throughout 50-h-long tests; no carbon deposits were
detected by TEM