Structural Properties and State of the Surface Layer of Zirconium Dioxide Modified by Tungstate Anions
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Переводная
|
| Журнал |
Russian Journal of Physical Chemistry A
ISSN: 0036-0244
, E-ISSN: 1531-863X
|
| Вых. Данные |
Год: 2012,
Том: 86,
Номер: 10,
Страницы: 1614-1617
Страниц
: 4
DOI:
10.1134/S0036024412100135
|
| Ключевые слова |
acid catalysts, solid solutions, tungstenated zirconium dioxide |
| Авторы |
Kuznetsova L. I.
1
,
Kazbanova A.V.
1
,
Solovyev L.A.
1
,
Mikhlin Yu.L.
1
,
Paukshtis E.A.
2
,
Kuznetsov P.N.
1
|
| Организации |
| 1 |
Institute of Chemistry and Chemical Engineering, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russia
|
| 2 |
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
|
|
A tetragonal metastable phase of zirconium dioxide formed after the addition of tungstate anions (>13 mol %) to the hydroxide precursor by different methods with heating (600–700°C), as revealed by X-ray diffraction analysis and X-ray photoelectron and IR spectroscopy. The W6+ and W5+ cations formed a solid solution with ZrO2. On the surface of the solid solution, the tungsten cations formed tungstate clusters (−WO x −)n. The formation of the WO3 phase was observed at concentrations of tungstate anions higher than 17.6 mol % or at temperatures of 850–870°C.