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

Alina Moscu; Yves Schuurman; Laurent Veyre; Chloé Thieuleux; Frederic Meunier

doi:10.1039/c4cc03208j

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

Chem Commun (Camb). 2014 Aug 11;50(62):8590-2. doi: 10.1039/c4cc03208j.

Authors

Alina Moscu¹, Yves Schuurman, Laurent Veyre, Chloé Thieuleux, Frederic Meunier

Affiliation

¹ Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON), Université Lyon 1, CNRS, 2, Av. Albert Einstein, F-69626 Villeurbanne, France. frederic.meunier@ircelyon.univ-lyon1.fr.

PMID: 24955808
DOI: 10.1039/c4cc03208j

Abstract

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 °C.