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To gamma-Al 2 O 3 as the carrier prepared supported perovskite catalyst, the use of methods such as XRD, BET structure of the catalyst prepared, specific surface area testing, and gas chromatography as a means of detection, evaluation means ScS catalytic activity with the activity of the catalyst. Were used repeatedly the impregnation and excess solution was prepared by impregnation LaCoO 3 / gamma-Al 2 O 3 catalyst results show that the excess solution prepared by impregnation the LaCoO 3 / gamma-the Al 2 O 3 catalyst activity is much better than repeatedly dipping method. And 500 ° C calcined samples, toluene combustion ignition temperature to 300 ° C, 390 ° C when toluene complete conversion. , Excessive solution impregnation, the The LaCoO 3 load in three different gamma-Al to to 2 O 3 carrier. Evaluation results show that the the carrier relatively large specific surface area, toluene relatively high catalytic activity. , The load # gamma-Al 2 O 3 carrier (600 ° C calcination treatment), by the activity of the catalyst calcined at 500 ℃ from the ignition temperature of 300 ℃, 390 ℃ when toluene complete conversion. 3, using the excess solution impregnation method, carrier selection the # gamma-Al the 2 O 3 Sr part replace La La0.8Sr0.2CoO -< / sub> / γ-Al 2 O 3 catalyst and LaCoO 3 / γ-Al 2 O 3 catalyst for toluene catalytic combustion compared. The experiments show that the samples by calcination at 500 ℃, La0.8Sr0.2CoO 3 / gamma-Al the 2 O 3 catalyst activity is the highest 310 ° C from the burning of 380 ° C complete combustion. However, when the calcination temperature is increased to 800 ° C, the catalyst grains continue to grow, reducing the surface area, resulting in a decrease in activity, incorporated Sr possible to improve the catalytic activity of the catalytic oxidation of p-toluene. 4, changing the B-site element, using several prepared by impregnation La0.8Sr0.2MnO 3 / gamma-Al 2 O 3 catalyst investigated of impregnated frequency on the catalytic activity. The results show, the catalyst prepared in the immersed for 10 times 5 times the activity of the catalyst impregnated better. Impregnated by ten times the 500 ° C calcined catalyst activity is best, 260 ° C from the burning, 290 ° C for complete combustion. 5, after the test, to elect a supported catalyst activity, that the impregnation by ten times, 500 ° C calcined at La0.8Sr0.2MnO 3 / gamma-Al 2 < / sub> O 3 catalyst to test its catalytic activity for kerosene. The results showed that the catalyst has good catalytic activity for kerosene, 260 ° C from the fuel, and kerosene of 300 ° C complete conversion of.
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