Supported Perovskites as Catalysts for CO Oxidation

摘要

Lanthanum and barium ferrites as wll as lanthanum cobaltate binary oxidic species supported on alumina and zirconia were tested for their catalytic activity for the CO oxidation reactions. Synthesized perovskite oxides were supported on alumina or zirconia by dry impregnation. For the same percent loading of the perovskite (5.8 per cent), LaCoO_3/ZrO_2 were found to be most active in comparison of Las-Co-O solids supported don ziroconia may be attributed to better reactivity of Co at B-site in comparison to F, homogeneous and higher dispersion on zirconia in comparison to alumina, ionic oxygen carrying Capacity of zirconia and larger ionic size of Zr~4+ Ion.