Preparation of monolithic Pt-Pd bimetallic catalyst and its performance in catalytic combustion of benzene series

The monolithic Pt-Pd bimetallic catalysts supported on gamma-Al2O3 using cordierite honeycomb ceramics as the first carrier are prepared by thermal adsorption method and characterized by XRD and SEM. The activities of the prepared catalysts are evaluated in a fixed bed reactor. It is determined that the suitable content of Pt-Pd is 0.1%, the molar ratio of additives Ce and Zr is 3:1 and their total content is 1%, the calcination temperature is lower than 500 degrees C. The comparison between the prepared catalyst and the commercial catalyst are made. It is found the prepared catalyst shows higher activity and stability. (C) 2013 Elsevier B.V. All rights reserved.