Add – Catalytic decomposition of nitrous oxide on nano sized palladium catalysts: The influence of precursor and the method of preparation
نویسندگان
چکیده
Alumina-supported 1 wt. % Pd catalysts were prepared by the deposition precipitation (DP) and impregnation (IMP) methods. The DP catalysts showed higher activity than those of their IMP analogues for decomposition of nitrous oxide. The DRIFTS analysis revealed preferential formation of partially oxidized Pd species on the surface of DP-Cl catalyst. The temperatures at which the peak maxima appeared were higher in the TPR patterns of the DP-Cl catalysts, indicating greater interaction between Pd and alumina leading to formation of cationic Pd species. The high activity of DP-Cl catalyst prepared by DP method was related to the formation of electron deficient Pd sites during the preparation and their occupancy in the octahedral vacancies of alumina.
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