Characterization and carbon monoxide oxidation activity of la_1-ySr_yCr_1-xRu_xO_3 perovskites

摘要

The oxidation of CO over La_1-ySr_yCr_1-xRu_xO_3 perovskite type oxides with y=0.3 and 0≤X≤0.100 have been studied. X-ray fluorescence analysis confirmed that content of elements in the bulk corresponds to the established nominal perovskite stoichiometry, indicating that no significant oxidation of ruthenium into volatile polyvalent oxides with their consequented escape from the sample occurred in air up to the temperature of 1000℃. According to X-ray diffraction analysis, all samples achieved the perovskite hexagonal with the presence of some SrCrO_4.