A high-throughput study of the redox properties of Nb-Ni oxide catalysts by low temperature CO oxidation: Implications in ethane ODH

► 3 series of Ni-Nb oxides are prepared by the citrate method. ► Catalytic properties in CO oxidation are tested on a 16-parallel reactor system. ► Order of reactivity is the same for the 3 series. ► Order of reactivity is the same as that in Nb1−x-NixO-catalyzed ethane ODH. ► Reductive and oxidative pre-treatments influence intrinsic activity and stability.