title: Self-supported Pd(x)Bi catalysts for the electrooxidation of glycerol in alkaline media.
abstract: Highly active self-supported PdxBi catalysts are synthesized by the sacrificial support method. Self-supported PdxBi catalysts have a porous nanostructured morphology with high surface areas (in the range from 75 to 100 m(2) g(-1)), making PdxBi a state-of-the-art catalyst. Pd4Bi displays the highest activity toward glycerol oxidation. In situ Fourier transform infrared spectroscopy highlights the unique catalytic behavior of self-supported PdxBi materials due to their particular structure and morphology. The confinement of reactants and intermediates in pores acting as nanoreactors is responsible for the high selectivity as a function of the electrode potential: aldehyde and ketone at low potentials, hydroxypyruvate at moderate potentials, and CO2 at high potentials. Moreover, the selectivity depends on the electrode history: it is different for the positive potential scan direction than for the reverse direction, where the catalyst becomes selective toward the production of carboxylates.
authors.affiliation: Université de Poitiers, IC2MP, UMR CNRS 7285, "Catalysis and Non-conventional Media" group, 4 rue Michel Brunet, 86073 Poitiers Cedex 9, France.
authors.forename: Anna
authors.initials: A
authors.lastname: Zalineeva
authors.forename: Alexey
authors.initials: A
authors.lastname: Serov
authors.forename: Monica
authors.initials: M
authors.lastname: Padilla
authors.forename: Ulises
authors.initials: U
authors.lastname: Martinez
authors.forename: Kateryna
authors.initials: K
authors.lastname: Artyushkova
authors.forename: Stève
authors.initials: S
authors.lastname: Baranton
authors.forename: Christophe
authors.initials: C
authors.lastname: Coutanceau
authors.forename: Plamen B
authors.initials: PB
authors.lastname: Atanassov