Catalytic Active Filter for Water-Gas Shift Reaction

A thin-disc, catalytic active filter (CAF), consisting of Pt/ceria (PC) as a water gas shift (WGS) catalyst and metal as the heat transfer media, was prepared to improve the catalytic performance of the exothermic WGS reaction and to facilitate a compact WGS reactor. With the PCA (Pt/ceria + Al) filter, a remarkable improvement of CO conversion was observed compared with the result over the PC-only WGS catalyst. The prepared CAF has the advantages of superior catalytic performance, high mechanical properties and easy stackability due to its compact disc-shape.