The Mechanism and Kinetic Models of the Catalytic Oxidation of Ethylene by p-Benzoquinone in Aqueous–Acetonitrile Solutions of Pd(II) Cationic Complexes
- Authors: Martynov I.V.1, Efremov G.E.1, Bovyrina E.A.1, Katsman E.A.1, Temkin O.N.1
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Affiliations:
- Lomonosov Institute of Fine Chemical Technologies
- Issue: Vol 59, No 4 (2018)
- Pages: 436-443
- Section: Article
- URL: https://journal-vniispk.ru/0023-1584/article/view/163904
- DOI: https://doi.org/10.1134/S0023158418040079
- ID: 163904
Cite item
Abstract
A kinetic study of ethylene oxidation to acetaldehyde by p-benzoquinone in the Pd(OAc)2–HClO4−LiClO4–CH3CN–H2O system has been carried out under conditions when palladium(II) cationic complexes exist at a molar fraction of water of 0.67 and 30°С. For a reaction that mostly lead to the formation ofPd(CH3CN)(H2O)32+ two-route mechanism and a kinetic model have been proposed that describe adequately the experimental dependence of the reaction initial rate on the concentration of p-benzoquinone, HClO4, and palladium. The model takes into account previous findings on the H2O/D2O and C2H4/C2D4 kinetic isotope effects and the important role of Pd(0) quinone complexes.
About the authors
I. V. Martynov
Lomonosov Institute of Fine Chemical Technologies
Email: olegtemkin@mail.ru
Russian Federation, Moscow, 119571
G. E. Efremov
Lomonosov Institute of Fine Chemical Technologies
Email: olegtemkin@mail.ru
Russian Federation, Moscow, 119571
E. A. Bovyrina
Lomonosov Institute of Fine Chemical Technologies
Email: olegtemkin@mail.ru
Russian Federation, Moscow, 119571
E. A. Katsman
Lomonosov Institute of Fine Chemical Technologies
Email: olegtemkin@mail.ru
Russian Federation, Moscow, 119571
O. N. Temkin
Lomonosov Institute of Fine Chemical Technologies
Author for correspondence.
Email: olegtemkin@mail.ru
Russian Federation, Moscow, 119571
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