Identification of Adsorption Forms by IR Spectroscopy for Formaldehyde and Formic Acid on K3PMo12O40
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: 1997,
Том: 61,
Номер: 2,
Страницы: 353-362
Страниц
: 10
DOI:
10.1007/BF02478393
|
| Ключевые слова |
Adsorption forms, Dioxymethylene, Formaldehyde, Formic acid, IR spectroscopy |
| Авторы |
Popova G.Ya.
1
,
Budneva A.A.
1
,
Andrushkevich T.V.
1
|
| Организации |
| 1 |
Federal Scientific Center, Boreskov Institute of Catalysis,
Novosibirsk 630090, Russia
|
|
Информация о финансировании (1)
|
1
|
Российский фонд фундаментальных исследований
|
96-03-33016
|
Interaction of HCOOH and H2CO with K3PMo12O40 has been studied by IR spectroscopy. HCOOH adsorbed mainly in molecular form due to hydrogen bonds with surface oxygen ions. Two forms of adsorbed H2CO were observed depending on the pressure. At low pressures it adsorbed on Brönsted acid sites with the formation of hydrogen-bonded complexes. Dioxymethylene groups and a small amount of polyoxymethylene groups were formed at higher pressures. In contrast to oxide catalysts, formates were formed only in small amounts in the absence of oxygen. This can be explained by the formation of new surface adsorption sites Mo ions-due to a partial reduction of K3PMo12O40 during its interaction with HCOOH and H2CO.