Reaction Kinetics and Catalysis Letters

, Volume 45, Issue 1, pp 7–14 | Cite as

Contribution of air oxygen to photooxidation of alkanes by vanadium(V) and chromium(VI) oxocomplexes

  • G. B. Shul'pin
  • G. V. Nizova
Article

Abstract

In photochemical oxygenation of cyclohexane by KVO3−CF3COOH or K2Cr2O7−Bu4NBr−H2O−CH2Cl2 in air the source of oxygen atoms in the product cyclohexanol and cyclohexanone is air dioxygen rather than a metal oxo-complex. In the absence of dioxygen the products of alkane oxygenation are not formed in either of the above systems. At pH=3, Cr(VI) does oxidize cyclohexane to cyclohexanol even in argon atmosphere.

Keywords

Chromium Argon Vanadium Oxygen Atom Alkane 

Abstract

В реакции фотохимического оксигенирования циклогексана в системах KVO3−CF3COOH или K2Cr2O7−Bu4NBr−H2O−CH2Cl2 на воздухе источником кислородного атома в образующихся циклогексаноле и циклогексаноне является дикислород воздуха, а не оксокомплекс металла. В отсутствии дикислорода продукты оксигенирования алкана не образуются в обеих системах. Однако, при pH=3, Cr(VI) окисляет циклогексан до циклогексанола даже в атмосфере аргона.

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Copyright information

© Akadémiai Kiadó 1991

Authors and Affiliations

  • G. B. Shul'pin
    • 1
  • G. V. Nizova
    • 1
  1. 1.Institute of Chemical PhysicsMoscowUSSR

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