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The Effect of the Preparation Conditions of Al2O3 Support to Catalysts for Diesel Particulate Removal from Exhaust Gases

A study has been conducted on the preparation conditions of Al2O3 for the catalysts for diesel particulate matter. The results show that the preparation conditions of Al2O3 support had great contribution to performance of Sn-Cu-K-V/Zr02-Al2O3 catalyst. The conditions of precipitant, pH value and calcination temperature were investigated. The experiment results show that the suitable precipitant was Na2CO3, the pH value of the solution was 9 and calcination temperature was 1000°C. The catalyst which active components were loaded on the modified support by immersion method showed better catalytic activity.