A New Mesoporous Titanium-Silicate Ti-MMM-2: A Highly Active and Hydrothermally Stable Catalyst for H2O2-Based Selective Oxidations
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Конференция |
Innovation in selective oxidation 2003 : 7th European Workshop on Selective Oxidation
31 авг. - 4 сент. 2003
,
Innsbruck
|
| Журнал |
Catalysis Today
ISSN: 0920-5861
, E-ISSN: 1873-4308
|
| Вых. Данные |
Год: 2004,
Том: 91-92,
Страницы: 205-209
Страниц
: 5
DOI:
10.1016/j.cattod.2004.03.034
|
| Ключевые слова |
H2O 2, Hydrothermal stability, Selective oxidation, Ti-MMM-2 |
| Авторы |
Kholdeeva Oxana A.
1
,
Melʹgunov Maxim S.
1
,
Shmakov Alexander N.
1
,
Trukhan Natalia N.
1
,
Kriventsov Vladimir V.
1
,
Zaikovskii Vladimir I.
1
,
Malyshev Michail E.
1
,
Romannikov Viatcheslav N.
1
|
| Организации |
| 1 |
Boreskov Institute of Catalysis, 5 Acad. Lavrentiev Av., Novosibirsk 630090, Russia
|
|
Информация о финансировании (5)
|
1
|
Civilian Research and Development Foundation
|
RUX0-008-NO-06
|
|
2
|
Civilian Research and Development Foundation
|
NO-008-XI/BG6108
|
|
3
|
Российский фонд фундаментальных исследований
|
01-03-32391
|
|
4
|
Российский фонд фундаментальных исследований
|
01-03-32852
|
|
5
|
International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union
|
2283
|
Physicochemical characterisation and catalytic properties of a new hydrothermally stable mesoporous mesophase titanium-silicate, denoted as Ti-MMM-2, synthesised under moderately acidic conditions are reported. Structure and texture were characterised by using X-ray diffraction, N2 adsorption and TEM. The state of titanium was characterised using DRS-UV and XANES techniques. Catalytic properties of Ti-MMM-2 were tested in oxidation of three large organic substrates, 2,3,6-trimethylphenol, caryophyllene and methyl phenyl sulfide, and compared with catalytic properties of TS-1 and Ti-MMM (titanium-silicate of the MCM-41-type synthesised under weakly alkaline conditions). The catalytic activity of Ti-MMM-2 is considerably higher compared to the activity of microporous TS-1 and similar to that of Ti-MMM. The performed physicochemical study implicated that Ti-MMM-2 combines marked accessibility of titanium and its high dispersion that ensure high catalytic activity of this material. By contrast to Ti-MMM, Ti-MMM-2 is hydrothermally stable and can be used repeatedly without deterioration of catalytic properties. A blend of high catalytic activity and hydrothermal stability allows to consider Ti-MMM-2 as a promising catalyst for the selective oxidation of large organic molecules with aqueous H2O2.