La1−xSrxCoO3, a perovskite-type mixed oxide, was successfully formed on the surface of cordierite by impregnation with an aqueous solution of starting materials and subsequent calcination, when the cordierite was precoated with adequate amount of lanthanum oxide. Effect of Sr substituton for La was similar to the perovskite bulk itself, and a high catalytic activity for oxidation of propane was obtained at x = 0.2.
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Mizuno et al. (1986) studied this question.