Phase Composition and Degree of Dispersion of Titanium Dioxide Краткое сообщение
Журнал |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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Вых. Данные | Год: 1976, Том: 17, Номер: 1, Страницы: 223-224 Страниц : 2 | ||
Авторы |
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Организации |
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Реферат:
Three TiO2 specimens were investigated. Specimens I and II were obtained by pptn. from Ti nitrate and TiCl4 and subsequent heating at 650° for 2 hr. Sample III was a reactive preparation of TiO2 with an anatase structure. With all 3 samples the same type of change in degree of dispersion and phase compn. was obsd.: 1) formation of rutile precedes any increase in dimensions of the primary particles of anatase; 2) the dimensions of the primary particles of anatase never exceed 500 Å; 3) the dimensions of the primary particles of rutile (even at the point of appearance of this phase) are >500 Å. Samples I-III differ somewhat in the temp. at which the anatase-rutile transformation occurs and the degree of dispersion of the anatase particles at this temp., but these differences are within the limits of the above general law. In a second series of tests specimens II and III were heat-treated at 650-1200° and held at this temp. for 2 hr. After cooling diffraction diagrams were obtained at room temp. The results indicate that in the anatase-rutile system, polymorphous change is assocd. with a change in dimensions of the primary particles. Primary particles of max. size 500 Å are typical of the anatase form of TiO2, and particles >500 Å of the rutile form. Composition, and conditions of production and treatment of TiO2, have a marked effect on the rate of growth of the particles and the temp. of the anatase-rutile transition, but all these changes are within the limits of the above law.
Библиографическая ссылка:
Ovsyuk E.P.
, Plyasova L.M.
, Kuklina V.N.
, Levitskii E.A.
Phase Composition and Degree of Dispersion of Titanium Dioxide
Kinetics and Catalysis. 1976. V.17. N1. P.223-224. WOS РИНЦ
Phase Composition and Degree of Dispersion of Titanium Dioxide
Kinetics and Catalysis. 1976. V.17. N1. P.223-224. WOS РИНЦ
Оригинальная:
Овсюк Е.П.
, Плясова Л.М.
, Куклина В.Н.
, Левицкий Э.А.
Фазовый состав и дисперсность двуокиси титана
Кинетика и катализ. 1976. Т.17. №1. С.254-256. РИНЦ
Фазовый состав и дисперсность двуокиси титана
Кинетика и катализ. 1976. Т.17. №1. С.254-256. РИНЦ
Даты:
Поступила в редакцию: | 11 июн. 1974 г. |
Идентификаторы БД:
Web of science | WOS:A1976CK97700028 |
РИНЦ | 30626131 |
Цитирование в БД:
Пока нет цитирований