Selective Oxidation of Alkylarenes with H2O2 Catalyzed by γ-Keggin Divanadium-substituted Polyoxometalate Тезисы доклада
Конференция |
EuropaCat-XII: 12th European Congress on Catalysis “Catalysis: Balancing the use of fossil and renewable resources” 30 авг. - 4 сент. 2015 , Казань |
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Сборник | EuropaCat XII. Catalysis: Balancing the use of fossil and renewable resources. XII European Congress on Catalysis, Kazan (Russia), 30 August - 4 September, 2015 : Book of Abstracts Сборник, BIC SB RAS. Novosibirsk.2015. 2184 c. ISBN 978-5-906376-10-7. РИНЦ |
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Вых. Данные | Год: 2015, Номер статьи : IV-PP125, Страниц : 2 | ||||||
Авторы |
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Организации |
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Информация о финансировании (4)
1 | Российский фонд фундаментальных исследований | 13-03-12042 |
2 | Российский фонд фундаментальных исследований | 14-03-31431 |
3 | Rovira i Virgili University | |
4 | European Cooperation in Science and Technology |
Реферат:
The possibility of application of [γ-PW10V2O40] 5- polyoxometalate as catalyst for the selective oxidation of pseudocumene (PC) and 2-methylnaphthalene (2-MN) with H2O2 in MeCN/tBuOH solvent (1:1 v/v) in the presence of mineral acid was explored .The reaction mechanism was studied by experimental and theoretical methods. Unusually high chemo- and regioselectivity towards 2,3,5-trimethylphenol (TMP) was found in PC oxidation. Atypical regioselectivity was found in the oxidation of 2-MN where 6-methyl-1,4-naphthoquinone predominates over 2-methyl-1,4-naphthoquinone. DFT studies revealed that the formation of 2,3,5-TMP in PC oxidation is, most likely, due to peroxo complex [γ-PW10O38V2(O2)]3- (I), which may arise from dehydration of hydroperoxo complex [γ-PW10O38V2(OH)(OOH)]3- formed upon interaction of the H2[γ-PW10V2O40] 3- with Н2О2. The kinetic regularities and estimated rate constants acquired from the kinetic study on PC oxidation with H2O2 are in good agreement with the theoretically predicted reaction mechanism where I is the main active species responsible for the aromatic ring hydroxylation.
Библиографическая ссылка:
Skobelev I.Y.
, Zalomaeva O.V.
, Evtushok V.Y.
, Maksimov G.M.
, Kholdeeva O.A.
, Carbo J.J.
, Poblet J.M.
Selective Oxidation of Alkylarenes with H2O2 Catalyzed by γ-Keggin Divanadium-substituted Polyoxometalate
В сборнике EuropaCat XII. Catalysis: Balancing the use of fossil and renewable resources. XII European Congress on Catalysis, Kazan (Russia), 30 August - 4 September, 2015 : Book of Abstracts. – BIC SB RAS., 2015. – C.1595-1596. – ISBN 978-5-906376-10-7.
Selective Oxidation of Alkylarenes with H2O2 Catalyzed by γ-Keggin Divanadium-substituted Polyoxometalate
В сборнике EuropaCat XII. Catalysis: Balancing the use of fossil and renewable resources. XII European Congress on Catalysis, Kazan (Russia), 30 August - 4 September, 2015 : Book of Abstracts. – BIC SB RAS., 2015. – C.1595-1596. – ISBN 978-5-906376-10-7.
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