Titanium-Silica Catalyst Derived from Defined Metallic Titanium Cluster Precursor: Synthesis and Catalytic Properties in Selective Oxidations Научная публикация
| Журнал |
Inorganica Chimica Acta
ISSN: 0020-1693 , E-ISSN: 1873-3255 |
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| Вых. Данные | Год: 2018, Том: 470, Страницы: 393-401 Страниц : 9 DOI: 10.1016/j.ica.2017.06.059 | ||||||||
| Ключевые слова | Alkene epoxidation, Heterogeneous catalysis, Mesoporous silica, Oxidative carboxylation, Titanium clusters | ||||||||
| Авторы |
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| Организации |
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Информация о финансировании (3)
| 1 | Федеральное агентство научных организаций России | 0303-2016-0005 |
| 2 | Российский фонд фундаментальных исследований | 15-33-20225 |
| 3 | Министерство образования и науки Российской Федерации |
Реферат:
A class of titanium-grafted mesoporous silica catalysts has been designed and prepared starting from molecularly defined metal clusters. The organosol mixture of zerovalent Ti13 clusters was impregnated onto the surface of ordered mesoporous silica molecular sieves (MCM-41 and MMM-2) and, after high-temperature calcination, an evenly dispersed non-single-site Ti(IV)nOx-like silica-supported catalyst was obtained. The catalytic solids, fully characterized by microscopic, spectroscopic and porosimetric techniques, showed standard performance in the liquid-phase epoxidation of a cyclic alkene, as limonene, but remarkably high selectivity values in the oxidative carboxylation of styrene, with tert-butylhydroperoxide and carbon dioxide in the presence of tetrabutylammonium bromide as a cocatalyst. Unprecedented high yields, up to 67%, in styrene carbonate were achieved after 24 h, under solvent-free conditions. The catalysts displayed also a noteworthy stability of the performance to repeated recovery and reuse cycles.
Библиографическая ссылка:
Evangelisti C.
, Guidotti M.
, Tiozzo C.
, Psaro R.
, Maksimchuk N.
, Ivanchikova I.
, Shmakov A.N.
, Kholdeeva O.
Titanium-Silica Catalyst Derived from Defined Metallic Titanium Cluster Precursor: Synthesis and Catalytic Properties in Selective Oxidations
Inorganica Chimica Acta. 2018. V.470. P.393-401. DOI: 10.1016/j.ica.2017.06.059 WOS Scopus РИНЦ OpenAlex CAPlus
Titanium-Silica Catalyst Derived from Defined Metallic Titanium Cluster Precursor: Synthesis and Catalytic Properties in Selective Oxidations
Inorganica Chimica Acta. 2018. V.470. P.393-401. DOI: 10.1016/j.ica.2017.06.059 WOS Scopus РИНЦ OpenAlex CAPlus
Даты:
| Поступила в редакцию: | 21 апр. 2017 г. |
| Принята к публикации: | 27 июн. 2017 г. |
| Опубликована online: | 5 июл. 2017 г. |
| Опубликована в печати: | 1 янв. 2018 г. |
Идентификаторы БД:
| ≡ Web of science: | WOS:000416060300049 |
| ≡ Scopus: | 2-s2.0-85024501978 |
| ≡ РИНЦ: | 31048879 |
| ≡ OpenAlex: | W2733787725 |
| ≡ Chemical Abstracts: | 2017:1192211 |