Acid-Base Properties of Alumina Prepared from a Hydrated Product of Centrifugal Thermal Activation of Hydrargillite (CTA-Product) Научная публикация
Журнал |
Reaction Kinetics and Catalysis Letters
ISSN: 0133-1736 , E-ISSN: 1588-2837 |
||
---|---|---|---|
Вых. Данные | Год: 2006, Том: 88, Номер: 2, Страницы: 381-390 Страниц : 10 DOI: 10.1007/s11144-006-0075-6 | ||
Ключевые слова | Acid-base properties, Alumina, CTA-product | ||
Авторы |
|
||
Организации |
|
Реферат:
Acid-base properties of aluminas prepared by thermal treatment of a hydrated CTA-product at 600°C were studied. The CTA-oxides, representing γ-Al2O3, were shown to contain terminal and bridged OH-groups. The concentration of the terminal OH-groups in the CTA-oxides was found to exceed their concentration in γ-Al2O3 prepared by dehydration of the “precipitated” pseudoboehmite, whereas the concentration of the bridged OH-groups in the CTA-oxides was lower than that in γ-Al2O3 prepared from pseudoboehmite. The total concentration of the surface Lewis acid sites in CTA-oxides varies within the limits of 2.80-4.14 mmol/m2 and is essentially above that in γ-Al2O3 (2.25 mmol/m2). The distinctive feature of the CTA-oxides is that their surface contains strong Lewis acid sites with νCO = 2220 and 2238 cm-1. The total concentration of basic sites in the CTA-oxides is lower than that in γ-Al2O3, however, in contrast to γ-Al2O3, they contain strong basic sites with νCDCl3 = 2200 cm-1.
Библиографическая ссылка:
Kul’ko E.V.
, Ivanova A.S.
, Budneva A.A.
, Paukshtis E.A.
Acid-Base Properties of Alumina Prepared from a Hydrated Product of Centrifugal Thermal Activation of Hydrargillite (CTA-Product)
Reaction Kinetics and Catalysis Letters. 2006. V.88. N2. P.381-390. DOI: 10.1007/s11144-006-0075-6 WOS Scopus РИНЦ
Acid-Base Properties of Alumina Prepared from a Hydrated Product of Centrifugal Thermal Activation of Hydrargillite (CTA-Product)
Reaction Kinetics and Catalysis Letters. 2006. V.88. N2. P.381-390. DOI: 10.1007/s11144-006-0075-6 WOS Scopus РИНЦ
Даты:
Поступила в редакцию: | 14 мар. 2006 г. |
Принята к публикации: | 23 мар. 2006 г. |
Опубликована в печати: | 1 авг. 2006 г. |
Идентификаторы БД:
Web of science | WOS:000239050100023 |
Scopus | 2-s2.0-33746082827 |
РИНЦ | 13517249 |
Chemical Abstracts | 2006:924580 |
Chemical Abstracts (print) | 146:469205 |
OpenAlex | W1991611135 |