Local Structure of Amorphous and Highly Dispersed Zirconium Hydroxides and Oxides Научная публикация
| Журнал |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Вых. Данные | Год: 2004, Том: 45, Номер: 5, Страницы: 739-742 Страниц : 4 DOI: 10.1023/B:KICA.0000044988.66511.2d | ||
| Ключевые слова | Hydroxo Complex; Anionic Sublattice; Monoclinic ZrO2; Zirconium Hydroxide; ZrO2 Phase | ||
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Реферат:
The local structure of amorphous and highly dispersed hydroxide and oxide zirconium compounds prepared from zirconyl nitrate solutions by precipitation was studied by an X-ray diffraction technique of radial electron distribution. It was found that X-ray amorphous precipitates were formed at 383 K. These precipitates were polynuclear hydroxo complexes, whose short-range ordering was similar to the structure of a cubic ZrO2 phase. A special feature of these formations, compared with the cubic oxide phase, is that the closest Zr–Zr distance in them is shortened by 0.2 Å, NO3 and OH groups are the constituents of an anionic sublattice, and the coordination number of Zr–anion distances is increased. Calcination at 653 K followed by cooling to room temperature resulted in the appearance of a monoclinic ZrO2 phase with a crystallite size of ∼60 Å along with the cubic phase. The amount of the former phase depended on the pH of precipitation and on the presence of residual NO3 and OH groups in precipitates.
Библиографическая ссылка:
Zyuzin D.A.
, Moroz E.M.
, Ivanova A.S.
, Shmakov A.N.
, Kustova G.N.
Local Structure of Amorphous and Highly Dispersed Zirconium Hydroxides and Oxides
Kinetics and Catalysis. 2004. V.45. N5. P.739-742. DOI: 10.1023/B:KICA.0000044988.66511.2d WOS Scopus РИНЦ CAPlusCA OpenAlex
Local Structure of Amorphous and Highly Dispersed Zirconium Hydroxides and Oxides
Kinetics and Catalysis. 2004. V.45. N5. P.739-742. DOI: 10.1023/B:KICA.0000044988.66511.2d WOS Scopus РИНЦ CAPlusCA OpenAlex
Оригинальная:
Зюзин Д.А.
, Мороз Э.М.
, Иванова А.С.
, Шмаков А.Н.
, Кустова Г.Н.
Локальная структура аморфных и высокодисперсных гидроксидов и оксидов циркония
Кинетика и катализ. 2004. Т.45. №5. С.780-783. РИНЦ
Локальная структура аморфных и высокодисперсных гидроксидов и оксидов циркония
Кинетика и катализ. 2004. Т.45. №5. С.780-783. РИНЦ
Даты:
| Поступила в редакцию: | 4 июл. 2003 г. |
| Опубликована в печати: | 1 сент. 2004 г. |
Идентификаторы БД:
| Web of science: | WOS:000224886200018 |
| Scopus: | 2-s2.0-6344241125 |
| РИНЦ: | 13697910 |
| Chemical Abstracts: | 2004:840790 |
| Chemical Abstracts (print): | 142:78580 |
| OpenAlex: | W2039744156 |