Multicycle Testing of P-Mo–V Heteropoly Acid Catalysts in Oxidation of Substituted Phenols
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
ChemistrySelect
, E-ISSN: 2365-6549
|
| Вых. Данные |
Год: 2018,
Том: 3,
Номер: 16,
Страницы: 4200-4206
Страниц
: 7
DOI:
10.1002/slct.201800360
|
| Ключевые слова |
Benzoquinones · Catalyst reusability · Heteropoly acids · Homogeneous catalysis · Oxidation |
| Авторы |
Rodikova Yulia A.
1
,
Zhizhina Elena G.
1
,
Pai Zinaida P.
1
|
| Организации |
| 1 |
Department of Fine Organic Synthesis and Renewable Energy Sources, Boreskov Institute of Catalysis SB RAS, pr. Akad. Lavrentieva 5, 630090 Novosibirsk, Russian Federation
|
|
Информация о финансировании (1)
|
1
|
Федеральное агентство научных организаций России
|
0303-2016-0008
|
A series of valuable para‐quinones, such as 2,3‐ and 2,6‐dimethyl‐1,4‐benzoquinones (Me2BQs), were synthesized via oxidation of the corresponding 2,3‐ and 2,6‐dimethylphenols by using homogeneous high‐vanadium solutions of heteropoly acids: H11P3Mo18V8’O87 (HPA‐8’) and H17P3Mo16V10’O89 (HPA‐10’). These catalysts were shown to be capable of interdependent and reversible change of their acid and oxidative properties, the efficient regeneration of which can be performed for 25 min. The complete optimization of reaction conditions allowed one to reach the selectivity of the desired Me2BQs in 95–97% and shorten the oxidation time. The structural integrity of heteropoly anions present in the catalyst solutions was found to persist during the repeated performing substrate oxidation and catalyst regeneration. The catalysts showed the preservation of stability and efficiency for 25 cycles, demonstrating the prospectivity of high‐vanadium heteropoly acids in oxidation of organic substances.