Study of Pt-CaTi(1-x)Fe(x)O3 perovskite catalyst for carbon monoxide oxidation reaction in presence of water vapor.

Perovskites, with general structure ABO3, are a promising class of catalytic materials, as they can be easily synthesized from a variety of abundant and non-toxic materials. Among them, Pt - CaTi(1-x)Fe(x)O3 perovskites are found to be good materials for the oxidation of carbon monoxide (CO), showing relative good conversion even at RT. Preliminary results shows that the catalytic performances in this type of catalyst are strongly influenced by the presence of water vapor in the gas feed showing an overall higher conversion. The experiment aims to get a better understanding of the reaction mechanism is such type of materials when the reaction is run in presence of water vapor. We will acquire In situ HERFD XANES for Pt L3 edge and HERFD XANES and XES Fe, Ti, Ca K-edge for Pt-CaTi(1-x)Fe(x)O3 having different Fe loading (Fe form 0.1 to 0.4).