The selective aerobic oxidation of crotyl alcohol to crotonaldehyde was investigated by time-resolved synchronous DRIFTS/MS/XAS over silica and alumina supported Pd nanoparticles. Alcohol and oxygen reactant feeds were cycled through the catalyst bed while dynamic measurements of the palladium oxidation state, molecular adsorbates and evolved product distribution were made simultaneously on a sub-second timescale. Highly dispersed palladium nanoparticles remained in a partially oxidised state
Bibliographical noteWe thank the EPSRC (EP/E046754/1; EP/G007594/2) for financial support, a Leadership Fellowship (A.F.L.), and studentship support (C.M.A.P.), and the ESRF for beamtime (CH2432). K.W. acknowledges the Royal Society for the award of an Industry Fel- lowship. Electron microscopy access was provided through the Leeds EPSRC Nanoscience and Nanotechnology Research Equip- ment Facility (LENNF) (EP/F056311/1). Additionally the EPSRC is thanked for funding the access to the TEM instruments in Oxford Materials under the Materials Equipment Access scheme (EP/F01919X/1).
- selective oxidation
- mesoporous supports