CO 2 /CO CONVERSION OVER HIGH ENTROPY ALLOYS AND OXIDES

Work package:
Utilization of CO2 or CO into valuable chemicals is of prime importance to mitigate the greenhouse gas emission. Even though many processes have been developed with alloys and supported nano-particles for this conversion, we would like to investigate high entropy alloy (HEA) as potential innovative material. High entropy alloy (HEA) 1 catalysts are made of multiple transition elements that exhibit a great potential for catalytic transformations. For example, CO and CO 2 hydrogenation has been known to proceed with metals such as Ni (Sabatier reaction) or Co and Fe (Fischer Tropsch process).2, 3 In this work, we would like to synthesize HEA made of those metals and investigate for CO 2 conversion. The catalysts will be characterized by various techniques such as powder X-ray diffraction, electron microscopy and others. The hydrogenation reactions will be carried out in a fixed bed flow reactor as shown in fig. 1. The products will be analyzed quantitively by a gas chromatography connected directly at the outlet of the reactor. The kinetics and thermodynamic parameters of the reaction will be evaluated during the reaction. On successful investigation in thermal catalysis, electrocatalytic tests will also be carried out with the same materials to compare between thermal and electrocatalysis.