Structural and Textural Characteristics of Systems Based on Layered Mg–Al Hydroxides Научная публикация
Журнал |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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Вых. Данные | Год: 2015, Том: 56, Номер: 3, Страницы: 347-358 Страниц : 12 DOI: 10.1134/S002315841503012X | ||||
Ключевые слова | High Resolution Transmission Electron Microscopy; Layered Double Hydroxide; Interplanar Spacing; Hydrotalcite | ||||
Авторы |
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Организации |
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Информация о финансировании (2)
1 | Министерство образования и науки Российской Федерации | |
2 | Новосибирский национальный исследовательский государственный университет |
Реферат:
Hydrotalcite-type layered Mg-Al hydroxides with Mg/Al ≥ 2 and related oxide systems have been synthesized and characterized. During the synthesis of the Mg-Al hydroxides with Mg/Al = 2 and 3, the interplanar spacings decrease because of the replacement of the interlayer NO 3 − anion by the CO 3 2− anion. Morphologically, the initial materials are aggregates of ∼1-μm oblong planar particles with a layered structure. The transverse dimension of the plates is 50–100 nm, and their thickness is 10–30 nm. As a rule, these planar particles are heavily distorted. Heat treatment of the Mg-Al hydroxides in the temperature range from 450 to 600°C causes the separation of the layered structures into planar domains of epitaxial MgAl2O4/MgO structures, which survive heat treatment at 900°C. During this heat treatment at 900°C, the greater part of the sample breaks down into two-dimensional particles of defective MgO and MgAl2O4 phases whose size is up to 100 nm. The oxide compositions synthesized from the layered Mg-Al hydroxides have a large pore volume and a fairly high specific surface area, which are retained upon heat treatment at 1000–1100°C.
Библиографическая ссылка:
Korneeva E.V.
, Ivanova A.S.
, Plyasova L.M.
, Zaikovskii V.I.
Structural and Textural Characteristics of Systems Based on Layered Mg–Al Hydroxides
Kinetics and Catalysis. 2015. V.56. N3. P.347-358. DOI: 10.1134/S002315841503012X WOS Scopus РИНЦ
Structural and Textural Characteristics of Systems Based on Layered Mg–Al Hydroxides
Kinetics and Catalysis. 2015. V.56. N3. P.347-358. DOI: 10.1134/S002315841503012X WOS Scopus РИНЦ
Оригинальная версия:
Корнеева Е.В.
, Иванова А.С.
, Плясова Л.М.
, Зайковский В.И.
Структурные и текстурные характеристики систем на основе слоистых Mg-Al-гидроксидов
Кинетика и катализ. 2015. Т.56. №3. С.346-358. DOI: 10.7868/S0453881115030120 РИНЦ
Структурные и текстурные характеристики систем на основе слоистых Mg-Al-гидроксидов
Кинетика и катализ. 2015. Т.56. №3. С.346-358. DOI: 10.7868/S0453881115030120 РИНЦ
Даты:
Поступила в редакцию: | 15 апр. 2014 г. |
Опубликована в печати: | 1 мая 2015 г. |
Опубликована online: | 17 июн. 2015 г. |
Идентификаторы БД:
Web of science | WOS:000356369200014 |
Scopus | 2-s2.0-84934964688 |
РИНЦ | 23985084 |
Chemical Abstracts | 2015:1022041 |
Chemical Abstracts (print) | 167:590419 |
OpenAlex | W612356377 |