Study of the SCR activity of Ce-containing catalysts by the means of operando X-ray Absorption Spectroscopy

The proposal aims to reveal the role of Ce in a series of materials (Metal-Organic Frameworks, supported CeO2, Ce:ZrO2 and Ce:TiO2) with promising activities as catalysts in the SCR process: the catalytic oxidation of NOx in a stream of ammonia and oxygen. We will monitor the Ce K-edge of those materials during thermal activation in inter atmosphere (i.e. He) and then send a NO+NH3+O2 mixture in order to highlight the role of Ce in such catalytic acitivity.