On the Unusual Mechanism of Lewis Acidity Manifestation in HZSM-5 Zeolites Научная публикация
Журнал |
Zeolites
ISSN: 0144-2449 |
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Вых. Данные | Год: 1990, Том: 10, Номер: 7, Страницы: 668-673 Страниц : 6 DOI: 10.1016/0144-2449(90)90077-5 | ||||
Ключевые слова | HZSM-5, i.r. spectroscopy, Lewis acidic sites | ||||
Авторы |
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Организации |
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Реферат:
The adsorption of CD3CN and NH3 on HZSM-5 zeolites containing prechemisorbed olefins were studied using diffuse reflectance i.r. spectroscopy. It is shown that in the presence of strong bases the unusual manifestation of Lewis acidity in these zeolites takes place as a result of fission of the Al←O bond in bridged alkoxyl groups by adsorbed base molecules. Nonempirical quantum-chemical calculations confirm this experimental finding and define the requirements of such Lewis acidity generation.
Библиографическая ссылка:
Medin A.S.
, Borovkov V.Y.
, Kazansky V.B.
, Pelmentschikov A.G.
, Zhidomirov G.M.
On the Unusual Mechanism of Lewis Acidity Manifestation in HZSM-5 Zeolites
Zeolites. 1990. V.10. N7. P.668-673. DOI: 10.1016/0144-2449(90)90077-5 WOS Scopus РИНЦ
On the Unusual Mechanism of Lewis Acidity Manifestation in HZSM-5 Zeolites
Zeolites. 1990. V.10. N7. P.668-673. DOI: 10.1016/0144-2449(90)90077-5 WOS Scopus РИНЦ
Даты:
Поступила в редакцию: | 14 авг. 1989 г. |
Принята к публикации: | 22 янв. 1990 г. |
Опубликована в печати: | 1 сент. 1990 г. |
Опубликована online: | 7 сент. 2004 г. |
Идентификаторы БД:
Web of science | WOS:A1990DY84700007 |
Scopus | 2-s2.0-0025485152 |
РИНЦ | 31076129 |
Chemical Abstracts | 1990:578912 |
Chemical Abstracts (print) | 113:178912 |
OpenAlex | W1968224425 |