| 摘要 |
PURPOSE:To obtain a catalyst having excellent durability and performance with an interaction effect of Ce and Pd by manufacturing the catalyst by wash coating a carrier substrate with a slurry of activated alumina powder the particle surfaces of which are covered with compound oxides of Ce and Pd. CONSTITUTION:The activated alumina powder pretreated in a basic aqueous solution is mixed and stirred with a mixture solution of cerium nitride and palladium nitride to precipitate basic cerium ad basic palladium on the surfaces of the alumina powder particles. This powder is dried, baked, and prepared into the alumina slurry. The obtd. slurry is applied on the carrier substrate such as a monolithic one, etc., by wash coating. Atoms of Ce and Pd are thus disposed near to each other to interact, so that the stabilizing effect of Ce on Pd works well to improve the durability of the catalyst. |
