Direct evidence by in situ IR CO monitoring of the formation and the surface segregation of a Pt-Sn alloy

A. Moscu (1) , Y. Schuurman (1) , L. Veyre , C. Thieuleux , Frédéric Meunier (1)

1 INGENIERIE - INGENIERIE

The heat of CO adsorption on the Pt atoms of a Pt-Sn alloy phase could be specifically determined from in situ DRIFTS data and was found to be about half that measured on a plain Pt reference. Surprisingly, a reversible surface segregation of the Pt-Sn alloy was observed at temperatures below 175 degrees C.

Domaines: Catalyse; Environnement et Société

A. Moscu, Y. Schuurman, L. Veyre, C. Thieuleux, Frédéric Meunier. Direct evidence by in situ IR CO monitoring of the formation and the surface segregation of a Pt-Sn alloy. Chemical Communications, 2014, 50, pp.8590-8592. ⟨10.1039/c4cc03208j⟩. ⟨hal-01073452⟩