Influence of OSC material on the behaviour of metallic Pd catalysts in C_2H_4 and CO oxidation as well as in NO reduction

摘要

The interaction of CO,C_2H_4,O_2,and NO reaction gas compounds over the metallic Pd A1_2O_3,and Pd OSC Al_2O_3 monoliths was investigated in order to understand the behaviour of OSC material in the oxidation and reduction reactions.FT-IR gas analyser was used for the analysis of the product gas composition.Several activity experiments carried out with dissimilar feeedstreams have revealed that the Ce_xZr_(1-x)O_2 mixed oxide is an oxygen storage compound,which promotes CO and C_2H_4 oxidation as well as NO reduction in particular at low temperatures.