Oxido-and dioxido-vanadium(V) complexes supported on carbon materials: Reusable catalysts for the oxidation of cyclohexane

Oxidovanadium(V) and dioxidovanadium(V) compounds, [VO(OEt)L] (1) and [Et3NH][VO2L] (2), were synthesized using an aroylhydrazone Schiff base (5-bromo-2-hydroxybenzylidene)-2-hydroxybenzohydrazide (H2L). They were characterized by elemental analysis, Fourier-transform infrared spectroscopy (FT-IR), (1H and51V) nuclear magnetic resonance (NMR), electrospray ioniza-tion mass spectrometry (ESI-MS) and single crystal X-ray diffraction analyses. Both complexes were immobilized on functionalized carbon nanotubes and activated carbon. The catalytic performances of 1 and 2, homogenous and anchored on the supports, were evaluated for the first time towards the MW-assisted peroxidative oxidation (with tert-butylhydroperoxide, TBHP) of cyclohexane under heterogeneous conditions. The immobilization of 1 and 2 on functionalized carbon materials improved the efficiency of catalytic oxidation and allowed the catalyst recyclability with a well-preserved catalytic activity. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Авторы
Sutradhar M.1 , Andrade M.A.1 , Carabineiro S.A.C.1, 2, 3 , Martins L.M.D.R.S.1 , Da Silva M.F.C.G. , Pombeiro A.J.L. 1, 4
Журнал
Издательство
MDPI AG
Номер выпуска
6
Язык
Английский
Статус
Опубликовано
Номер
1456
Том
11
Год
2021
Организации
  • 1 Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa, 1049-001, Portugal
  • 2 Laboratory of Catalysis and Materials (LCM), Associate Laboratory LSRE-LCM, Faculty of Engineering, University of Porto, Porto, 4200-465, Portugal
  • 3 LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Largo da Torre, Caparica, 2829-516, Portugal
  • 4 Research Institute of Chemistry, Peoples’ Friendship, University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow, 117198, Russian Federation
Ключевые слова
Aroylhydrazone; Carbon materials; Heterogeneous catalysis; Microwave-assisted oxidation; Oxidovanadium(V) complexes; X-ray structure
Дата создания
20.07.2021
Дата изменения
20.07.2021
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/74259/
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