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- Title
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.; Efremov, G. E.; Bovyrina, E. A.; Katsman, E. A.; Temkin, O. N.
- 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.
- Subjects
OXIDATION of ethylene; PALLADIUM; PALLADIUM compounds; BENZOQUINONES; ACETONITRILE; AQUEOUS solutions; KINETIC isotope effects; QUINONE compounds
- Publication
Kinetics & Catalysis, 2018, Vol 59, Issue 4, p436
- ISSN
0023-1584
- Publication type
Article
- DOI
10.1134/S0023158418040079