Operando XAS investigation on Dynamic behavior of Single Atom Catalysts Supported over Ceria Towards CO2 Hydrogenation

This research proposal aims for understanding the dynamic behaviour of single atom supported over CeO2 towards the CO2 hydrogenation reaction under operando conditions. After successful understanding of the system, we will be able to establish a periodic trend among 4d and 5d transition metals (Ru, Ir and Pt) towards CO2 hydrogenation reactions. The study here will shed the light in understanding trend in supported single atom and sub nano-metric cluster catalysts across periodic table in 4d and 5d transition metals. With the results we expect to be able to evaluate (a) how dynamic are the single atoms/clusters under CO2 hydrogenation conditions (b) what are the roles of active species evolved and (c) why single atom of certain metals favor reverse water gas shift reaction to make CO or alternatively prefers for methanation reaction to produce CH4. This study will further motivate us in designing new sets of solid catalysts with similar active sites.