Effect of Pt Nanoparticle Size on the Specific Catalytic Activity of Pt/SiO2 and Pt/TiO2 in the Total Oxidation of Methane and n-Butane
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Переводная
|
| Журнал |
Russian Chemical Bulletin
ISSN: 1066-5285
, E-ISSN: 1573-9171
|
| Вых. Данные |
Год: 2010,
Том: 59,
Номер: 9,
Страницы: 1713-1719
Страниц
: 7
DOI:
10.1007/s11172-010-0301-2
|
| Ключевые слова |
catalysts Pt/SiO2 and Pt/TiO2, Pt nanoparticles, size effect, specific activity, total oxidation of methane and n-butane |
| Авторы |
Stakheev A.Yu.
1
,
Gololobov A.M.
1
,
Beck I.E.
2
,
Bragina G.O.
1
,
Zaikovsky V.I.
2
,
Ayupov A.B.
2
,
Telegina N.S.
1
,
Bukhtiyarov V.I.
2
|
| Организации |
| 1 |
Институт органической химии им. Н.Д. Зелинского РАН
|
| 2 |
Институт катализа им. Г.К. Борескова СО РАН
|
|
Информация о финансировании (1)
|
1
|
Российский фонд фундаментальных исследований
|
08-03-01016
|
The dependence of the specific catalytic activity (A sp ) of the catalysts Pt/SiO2 and Pt/TiO2 in the total oxidation of CH4 and n-C4H10 on the Pt nanoparticle size (in the range from 1 to 4 nm) was studied. The specific catalytic activity increases with an increase in the platinum nanoparticle size, indicating that the total oxidation is a structure-sensitive reaction. The structure sensitivity depends on the size of an oxidized molecule: it increases sharply on going from CH4 to n-C4H10. The support also exerts a considerable effect on the A sp value: in the oxidation of both CH4 and C4H10 the specific catalytic activity for the catalysts Pt/TiO2 is 3–4 times that for Pt/SiO2.