1H, 51V and 15N Nuclear Magnetic Resonance Studies of Structure and Properties of Vanadia Supported on TiOx/SiO2 Научная публикация
Журнал |
Solid State Nuclear Magnetic Resonance
ISSN: 0926-2040 , E-ISSN: 1527-3326 |
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Вых. Данные | Год: 1995, Том: 4, Номер: 6, Страницы: 369-379 Страниц : 11 DOI: 10.1016/0926-2040(95)00020-Q | ||||
Ключевые слова | 15N nuclear magnetic resonance, 1H nuclear magnetic resonance, 51V nuclear magnetic resonance, Catalysts, Magic-angle spinning nuclear magnetic resonance, Silica, Surface oxides, Titania, Vanadia | ||||
Авторы |
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Организации |
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Информация о финансировании (4)
1 | German Research Foundation | SFB 338 |
2 | Российский фонд фундаментальных исследований | 93-03-4772 |
3 | Российский фонд фундаментальных исследований | 93-03-4774 |
4 | Verband der Chemischen Industrie |
Реферат:
1H magic-angle spinning nuclear magnetic resonance (MAS NMR) spectra of Full-size image (<1 K) catalysts suggest the interaction of surface TiOx. species with Si-OH groups of the silica. Simultaneously, Ti-OH groups from surface titania species appear. The distribution of TiOx species over SiO2 is non-uniform, since a considerable part of surface OH groups remains unreacted with supported titania. Supported vanadia species interact both with Si-OH and Ti-OH groups. 51V NMR spectra suggest the interaction of vanadia with supported titania species and show the non-uniform distribution of titania over the SiO2 surface. Deposition of titania as well as vanadia produces strong electron-accepting (Lewis) sites which interact with the terminal N atom of adsorbed N2O molecules, resulting in a downfield shift of the resonance in 15N NMR spectra. The acid strength of electron-accepting sites is similar in both cases. Only about 10% of the total amount of supported titania and vanadia create Lewis sites.
Библиографическая ссылка:
Mastikhin V.M.
, Terskikh V.V.
, Lapina O.B.
, Filimonova S.V.
, Seidl M.
, Knözinger H.
1H, 51V and 15N Nuclear Magnetic Resonance Studies of Structure and Properties of Vanadia Supported on TiOx/SiO2
Solid State Nuclear Magnetic Resonance. 1995. V.4. N6. P.369-379. DOI: 10.1016/0926-2040(95)00020-Q WOS Scopus РИНЦ
1H, 51V and 15N Nuclear Magnetic Resonance Studies of Structure and Properties of Vanadia Supported on TiOx/SiO2
Solid State Nuclear Magnetic Resonance. 1995. V.4. N6. P.369-379. DOI: 10.1016/0926-2040(95)00020-Q WOS Scopus РИНЦ
Даты:
Поступила в редакцию: | 20 янв. 1995 г. |
Принята к публикации: | 22 февр. 1995 г. |
Опубликована в печати: | 1 авг. 1995 г. |
Опубликована online: | 1 янв. 2002 г. |
Идентификаторы БД:
Web of science | WOS:A1995RT32000005 |
Scopus | 2-s2.0-0029347434 |
РИНЦ | 31156470 |
Chemical Abstracts | 1995:751980 |
Chemical Abstracts (print) | 123:209727 |
PMID (PubMed) | 8581435 |
OpenAlex | W273775013 |