Nano-structured Pd-Sn catalysts for alcohol electro-oxidation in alkaline medium

Anna Zalineeva (1) , Alexey Serov (2, 3) , Monica Padilla (2, 3) , Ulises Martinez (2, 3) , Kateryna Artyushkova (2, 3) , Steve Baranton (1) , Christophe Coutanceau (1) , Plamen Atanassov (2, 3)

1 IC2MP [Poitiers] - Institut de chimie des milieux et matériaux de Poitiers [UMR 7285]
2 CEET - Center For Emerging Energy Technologies [Albuquerque]
3 NE - Department of Nuclear Engineering [Albuquerque]

Active self-supported Pd1Snx catalysts are synthesized by the sacrificial support method. Their catalytic activities towards C-1 to C-3 alcohol oxidation are determined in alkaline medium. The comparison of the activities allows discarding a first base-catalyzed deprotonation reaction of alcohol as oxidation rate-determining step, speaking up for mechanisms involving a C-adsorption of carbon bearing an alcohol function. It is also shown that desorption of dihydroxyacetone is the glycerol oxidation-limiting step at low potentials.

Mots clés: Tin; Electrooxidation; Palladium; Alcohol; Alkaline medium; Mechanism

Domaines: Catalyse

Anna Zalineeva, Alexey Serov, Monica Padilla, Ulises Martinez, Kateryna Artyushkova, et al.. Nano-structured Pd-Sn catalysts for alcohol electro-oxidation in alkaline medium. Electrochemistry Communications, 2015, 57, pp.48-51. ⟨10.1016/j.elecom.2015.05.006⟩. ⟨hal-01368508⟩