Highly Dispersed Zirconium-Containing Oxide Systems: Synthesis, Properties, and Applications Научная публикация
Конференция |
Научные основы приготовления и технологии катализаторов. Проблемы дезактивации катализаторов : IV Рос. конф. с участием стран СНГ 29 авг. - 1 сент. 2000 , Стерлитамак |
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Журнал |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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Вых. Данные | Год: 2001, Том: 42, Номер: 3, Страницы: 354-365 Страниц : 12 DOI: 10.1023/A:1010413331806 | ||
Ключевые слова | Particle Size; Surfactant; Dehydration; Pore Structure; Phase Composition | ||
Авторы |
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Организации |
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Реферат:
The formation of the phase composition, dispersion, pore structure, and surface state of binary zirconium-containing systems was examined depending on the nature and concentration of the second component, preparation conditions and procedures, and thermal treatment conditions. Various types of interactions were found, which are governed by the nature of the second component and the treatment temperature. The effects of surfactants on the physicochemical properties of precipitates depend on the conditions of synthesis: the surfactant amount retained by a precipitate at pH 3–4 is greater than that at pH 9 by an order of magnitude. The thermolysis of samples synthesized at acidic pH, along with dehydration and dehydroxylation, is accompanied by the decomposition and degradation of surfactants. Because of this, certain compounds and their fragments capable of reducing corresponding phases are removed stepwise. Highly dispersed compositions were obtained at 110–400°C with a minimum particle size of
2.5–16 nm; at 700°C, the particle size was no higher than 20 nm. The ratio between the ionic radii of added and main components is a factor determining the dispersion of formed phases. In this case, changes in the nature of surfactants and in the conditions of a particular synthesis make it possible to prepare highly dispersed systems with monomesoporous structures. The total volume and the average diameter of pores can be controlled over wide limits.
Библиографическая ссылка:
Ivanova A.S.
Highly Dispersed Zirconium-Containing Oxide Systems: Synthesis, Properties, and Applications
Kinetics and Catalysis. 2001. V.42. N3. P.354-365. DOI: 10.1023/A:1010413331806 WOS Scopus РИНЦ
Highly Dispersed Zirconium-Containing Oxide Systems: Synthesis, Properties, and Applications
Kinetics and Catalysis. 2001. V.42. N3. P.354-365. DOI: 10.1023/A:1010413331806 WOS Scopus РИНЦ
Оригинальная:
Иванова А.С.
Высокодисперсные цирконийсодержащие оксидные системы: синтез, свойства, применение
Кинетика и катализ. 2001. Т.42. №3. С.394-405. РИНЦ
Высокодисперсные цирконийсодержащие оксидные системы: синтез, свойства, применение
Кинетика и катализ. 2001. Т.42. №3. С.394-405. РИНЦ
Даты:
Поступила в редакцию: | 18 сент. 2000 г. |
Опубликована в печати: | 1 мая 2001 г. |
Идентификаторы БД:
Web of science | WOS:000169743900008 |
Scopus | 2-s2.0-0001134268 |
РИНЦ | 13377028 |
Chemical Abstracts | 2001:506104 |
Chemical Abstracts (print) | 135:66733 |
OpenAlex | W2951691885 |