The production of CO via Reverse Water Gas Shift (RWGS) reaction is a suitable route for CO2 valorization. In this study series modified spinels AB2O4 (A site = Ni, Zn and Cu B site=Fe) are investigated as RWGS catalysts their structure-to-function relationships derived from the changes on A-site cation rationalized. For all ferrite systems, process main activity selectivity governed by B-site ...