Aerobic oxidative dehydrogenations catalyzed by the mixed-addenda heteropolyanion PV2Mo10O40 5-

A kinetic and mechanistic study

Ronny Neumann, Michal Levin

Research output: Contribution to journalArticle

129 Citations (Scopus)

Abstract

The aerobic oxidative dehydrogenation of α-terpinene to p-cymene catalyzed by the mixed-addenda heteropolyanion PV2Mo10O40 5- has been used to investigate the oxidation mechanism catalyzed by this class of compounds. The kinetics of the reaction show it to be zero order in α-terpinene, first order in dioxygen, and second order in the heteropolyanion catalyst. The kinetic results along with the use of UV-vis, ESR, 31P NMR, and IR spectroscopy have enabled the formulation of a reaction scheme involving the formation of a stable substrate-catalyst complex in the catalyst reduction (substrate oxidation) stage and a μ-peroxo catalyst intermediate in the catalyst reoxidation where dioxygen is reduced to water in a four-electron redox reaction.

Original languageEnglish
Pages (from-to)7278-7286
Number of pages9
JournalJournal of the American Chemical Society
Volume114
Issue number18
Publication statusPublished - 1992

Fingerprint

Dehydrogenation
Oxygen
Catalysts
Kinetics
Oxidation-Reduction
Magnetic Resonance Spectroscopy
Electrons
Water
Oxidation
Redox reactions
Substrates
Nuclear magnetic resonance spectroscopy
Paramagnetic resonance
Infrared spectroscopy
4-cymene

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

@article{77b061cd3ea14625963d661821e47945,
title = "Aerobic oxidative dehydrogenations catalyzed by the mixed-addenda heteropolyanion PV2Mo10O40 5-: A kinetic and mechanistic study",
abstract = "The aerobic oxidative dehydrogenation of α-terpinene to p-cymene catalyzed by the mixed-addenda heteropolyanion PV2Mo10O40 5- has been used to investigate the oxidation mechanism catalyzed by this class of compounds. The kinetics of the reaction show it to be zero order in α-terpinene, first order in dioxygen, and second order in the heteropolyanion catalyst. The kinetic results along with the use of UV-vis, ESR, 31P NMR, and IR spectroscopy have enabled the formulation of a reaction scheme involving the formation of a stable substrate-catalyst complex in the catalyst reduction (substrate oxidation) stage and a μ-peroxo catalyst intermediate in the catalyst reoxidation where dioxygen is reduced to water in a four-electron redox reaction.",
author = "Ronny Neumann and Michal Levin",
year = "1992",
language = "English",
volume = "114",
pages = "7278--7286",
journal = "Journal of the American Chemical Society",
issn = "0002-7863",
publisher = "American Chemical Society",
number = "18",

}

TY - JOUR

T1 - Aerobic oxidative dehydrogenations catalyzed by the mixed-addenda heteropolyanion PV2Mo10O40 5-

T2 - A kinetic and mechanistic study

AU - Neumann, Ronny

AU - Levin, Michal

PY - 1992

Y1 - 1992

N2 - The aerobic oxidative dehydrogenation of α-terpinene to p-cymene catalyzed by the mixed-addenda heteropolyanion PV2Mo10O40 5- has been used to investigate the oxidation mechanism catalyzed by this class of compounds. The kinetics of the reaction show it to be zero order in α-terpinene, first order in dioxygen, and second order in the heteropolyanion catalyst. The kinetic results along with the use of UV-vis, ESR, 31P NMR, and IR spectroscopy have enabled the formulation of a reaction scheme involving the formation of a stable substrate-catalyst complex in the catalyst reduction (substrate oxidation) stage and a μ-peroxo catalyst intermediate in the catalyst reoxidation where dioxygen is reduced to water in a four-electron redox reaction.

AB - The aerobic oxidative dehydrogenation of α-terpinene to p-cymene catalyzed by the mixed-addenda heteropolyanion PV2Mo10O40 5- has been used to investigate the oxidation mechanism catalyzed by this class of compounds. The kinetics of the reaction show it to be zero order in α-terpinene, first order in dioxygen, and second order in the heteropolyanion catalyst. The kinetic results along with the use of UV-vis, ESR, 31P NMR, and IR spectroscopy have enabled the formulation of a reaction scheme involving the formation of a stable substrate-catalyst complex in the catalyst reduction (substrate oxidation) stage and a μ-peroxo catalyst intermediate in the catalyst reoxidation where dioxygen is reduced to water in a four-electron redox reaction.

UR - http://www.scopus.com/inward/record.url?scp=0000858772&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000858772&partnerID=8YFLogxK

M3 - Article

VL - 114

SP - 7278

EP - 7286

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

SN - 0002-7863

IS - 18

ER -