A CU-CE-AL CATALYST FOR REMOVING SOOT PARTICLES AND NOX SIMULTANEOUSLY AND ITS PREPARATION METHOD

摘要

A Cu-Ce-Al catalyst for removing soot particles and NOx simultaneously with a structure formula of CuO-CeO2-Al2O3, wherein the mole ratio of Cu : Ce is 1:19~1:4, the mass ratio of (CuO-CeO2): Al2O3 is 9:1 ~ 1:2. The catalyst can be prepared by sol-gel method or coprecipitation method which use cheap nonnoble metal salts as raw materials. The preparation method can be controlled easily and achieve industrialization readily. The catalyst can low the combustion temperature of soot particles from 500 °C to 400 °C, and reduce NO to a certain extent, thus can remove both pollutants simultaneously. The catalyst has superior heat stability.