Heat-resistant support for catalysts and the production thereof

摘要

This catalyst aims to improve heat resistance and durability by highly dispersing an NOx storage component. This catalyst is produced by preparing a high heat-resistant catalyst support powder which comprises alumina and an NOx storage component, said alumina and said NOx storage component constituting an amorphous composite oxide; preparing noble metal-loaded porous support powder by loading a noble metal on a support comprising a porous oxide; and mixing said high heat-resistant catalyst support powder with said noble metal-loaded porous support powder. The obtained catalyst is superior in heat resistance and NOx storage ability.