Reaction Kinetics and Catalysis Letters

, Volume 38, Issue 1, pp 187–192 | Cite as

Formation mechanism of hexafluoropropylene oxide in low-temperature liquid-phase oxidation of hexafluoropropylene by molecular oxygen

  • V. V. Shapovalov
  • V. A. Poluektov


The effect of oxygen pressure on the conversion rate of hexafluoropropylene and the formation rates of reaction products (hexafluoropropylene oxide, trifluoroacetyl-fluoride, carbonylfluoride and perfluoropolyesterpolyperoxide including separate studies of its peroxide oxygen) has been studied. It has been established that epoxidation by peroxide radicals RO2\+C3F6→Ro\+C3F6O cannot account for the formation mechanism of hexafluoropropylene oxide. An epoxidation mechanism is suggested implying the participation of alkoxyl radicals via the formation of the alkyl radical R−O−C3F6\ as an intermediate.


Peroxide Epoxidation Alkyl Radical Formation Rate Conversion Rate 
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Изучено влияние давления кислорода на скорость расходования гексафторпропилена и скорости образования продуктов реакции-окиси гексафторпропилена, трифторацетилфторида, карбонилфторида и перфторполизфирполипе-роксида, в том числе отдельно его пероксидного кислорода. Показано, что реакция зпоксидирования пероксидными радикалами RO2\+C3F6→RO\+C3F6O не может объяснить механизм образования окиси гексафторпропилена. Предложен механизм зпоксидирования с участием алкоксильных радикалов через промежуточное образование алкильного радикала R−O−C3F6.


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Copyright information

© Akadémiai Kiadó 1989

Authors and Affiliations

  • V. V. Shapovalov
    • 1
  • V. A. Poluektov
    • 1
  1. 1.Research Institute of Physical ChemistryObninskUSSR

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