Unravelling the role of alloys in Ni-Fe/SiO2 and Ni-Cu/SiO2 CO2 hydrogenation catalysts by operando XAS

Ni-Fe/SiO2 and Ni-Cu/SiO2 catalysts are promising candidates for CO2 hydrogenation towards value-added products. We aim to understand the influence of Fe and Cu on electronic and structural properties of Ni, and further the influence of varying metal ratio. Operando XAS will yield key information on metal alloy formation and a fundamental understanding of synergistical effects in bimetallic catalysts and their influence on catalytic performance. Combining these results will pave the way for deducing a general guideline to rationally design bimetallic catalysts for CO2 valorization .