Vanadium catalyzed reduction of dioxygen to hydrogen peroxide: an oscillating process

Authors
Bonchio, M Bortolini, O Carraro, M Conte, V Primon, S
Citation
M. Bonchio et al., Vanadium catalyzed reduction of dioxygen to hydrogen peroxide: an oscillating process, J INORG BIO, 80(1-2), 2000, pp. 191-194
Citations number
20
Categorie Soggetti
Biochemistry & Biophysics","Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF INORGANIC BIOCHEMISTRY
ISSN journal
01620134 → ACNP
Volume
80
Issue
1-2
Year of publication
2000
Pages
191 - 194
Database
ISI
SICI code
0162-0134(20000530)80:1-2<191:VCRODT>2.0.ZU;2-U
Abstract
In acid isopropanol/water solution and aerobic conditions, (Bu)(4)N+VO3- in the presence of an initial amount of H2O2, catalyzes the autoxidation of i sopropanol to acetone and the contextual dioxygen reduction to hydrogen per oxide, which accumulates in solution. We have observed that, in the system under examination, the build-up of H2O2 concentration shows an oscillatory behavior. Speciation of the peroxovanadium complexes in iPrOH/H2O has been explored with the combined use of V-51 NMR, UV-Vis and ESI-MS techniques. ( C) 2000 Elsevier Science Inc. All rights reserved.