A New Environmentally Friendly Method for the Production of 2,3,5-Trimethyl-p-Benzoquinone
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Конференция |
Environmental Catalysis : A Step Forward: 3rd European Workshop on Environmental Catalysis
02-05 мая 2001
,
Maiori
|
| Журнал |
Catalysis Today
ISSN: 0920-5861
, E-ISSN: 1873-4308
|
| Вых. Данные |
Год: 2002,
Том: 75,
Номер: 1-4,
Страницы: 203-209
Страниц
: 7
DOI:
10.1016/S0920-5861(02)00070-6
|
| Ключевые слова |
2,3,5-Trimethyl-p-benzoquinone, Mesoporous mesophase materials, Titanium |
| Авторы |
Kholdeeva O.A.
1
,
Trukhan N.N.
1
,
Vanina M.P.
1
,
Romannikov V.N.
1
,
Parmon V.N.
1
,
Mrowiec-Białoń J.
2
,
Jarzębski A.
3
|
| Организации |
| 1 |
Boreskov Institute of Catalysis, 5 Acad. Lavrentiev Av., Novosibirsk 630090, Russia
|
| 2 |
Institute of Chemical Engineering, ul. Bałtycka 5, 44-100 Gliwice, Poland
|
| 3 |
Department of Chemical Engineering, Silesian University of Technology, Strzody 7, 44-100 Gliwice, Poland
|
|
Информация о финансировании (1)
|
1
|
Российский фонд фундаментальных исследований
|
01-03-32852
|
A new environmentally friendly method for the production of 2,3,5-trimethyl-1,4-benzoquinone (TMBQ, Vitamin E precursor) based on the oxidation of 2,3,6-trimethylphenol (TMP) with aqueous H2O2 over various Ti-containing mesoporous silicate materials is reported. Both well-organized Ti-containing mesoporous mesophase silicate (Ti-MMM), having hexagonal arrangement of uniform mesopores, and amorphous TiO2–SiO2 mixed oxides (aerogels and xerogels) produced TMBQ with good to high yield. All the materials studied have been proved to operate as truly heterogeneous catalysts. No titanium leaching occurred from the solid matrixes during the oxidation process. Titanium dispersion and its accessibility were found to be crucial factors determining the catalytic properties. For samples with similar titanium loading, both the catalytic activity and TMBQ yield appeared to fall in the order TiO2–SiO2 aerogel>Ti-MMM>TiO2–SiO2 xerogel and correlate with average mesopore diameter and mesopore volume. The best results (96–98% selectivity to TMBQ at 99–100% TMP conversion) were obtained with TiO2–SiO2 aerogels, containing 1.7–6.5 wt.% Ti.