Spin-trapping in metal nanoparticle catalysis
Lead Research Organisation:
University of York
Department Name: Chemistry
Abstract
Metal nanoparticles are very efficient catalysts for many important organic reactions, thanks to their very high surface area and unique electronic properties. We have recently found that gold nanoparticle-catalysed oxidations proceed via formation of highly reactive free radical intermediates. The proposed reserearch aims to detect free radicals in other related processes. We will use spin trapping and EPR spectroscopy to determine the structure and quantity of the radicals formed. The information obtained will help us develop greater understanding of the mechanism of catalytic reactions, and the factors which affect the yield and selectivity in these reactions. The results of the proposed research will ultimately help optimise nanoparticle-catalysed reactions.
Organisations
People |
ORCID iD |
| Victor Chechik (Principal Investigator) |
Publications
Chechik V
(2010)
Cyanogen formation during asymmetric cyanohydrin synthesis.
in Chemical communications (Cambridge, England)
Conte M
(2010)
Enhanced acyl radical formation in the Au nanoparticle-catalysed aldehyde oxidation.
in Chemical communications (Cambridge, England)
Conte M
(2009)
Radical intermediates in chloroform reactions over triphenylphosphine-protected Au nanoparticles.
in Organic & biomolecular chemistry
Conte M
(2010)
Spin trapping of radical intermediates in gas phase catalysis: cyclohexane oxidation over metal oxides.
in Chemical communications (Cambridge, England)
Conte M
(2009)
Mechanistic insight into TEMPO-inhibited polymerisation: simultaneous determination of oxygen and inhibitor concentrations by EPR.
in Organic & biomolecular chemistry
Conte M
(2009)
Spin trapping of Au-H intermediate in the alcohol oxidation by supported and unsupported gold catalysts.
in Journal of the American Chemical Society
Conte M
(2010)
A catalytic reactor for the trapping of free radicals from gas phase oxidation reactions.
in The Review of scientific instruments
Ionita P
(2007)
Gold nanoparticle-initiated free radical oxidations and halogen abstractions.
in Organic & biomolecular chemistry
Ma Y
(2011)
Thermal decay of TEMPO in acidic media via an N-oxoammonium salt intermediate.
in Organic & biomolecular chemistry