A HIGH HEAT-RESISTANT CATALYST SUPPORT AND ITS PRODUCTION METHOD, AND A HIGH HEAT-RESISTANT CATALYST AND ITS PRODUCTION METHOD

摘要

By dispersing and the NO _X absorbing material to improve the heat resistance and the durability of the catalyst.;A mixed sol solution is prepared by mixing a solution of a compound containing at least one element selected from alkali metals, alkaline earth metals and rare earth elements with a sol solution of an oxide of at least one metal selected from Groups 3B, 4A and 4B of the Periodic Table of the Elements. The mixed sol solution is gelled, dried and calcined.;The obtained catalyst carrier is amorphous and has a high specific surface area and high heat resistance even when calcined at high temperatures.