Manufacture of monolithic catalyst

Abstract

Abstract PURPOSE:To enable the purification of waste gas comfirmable to the flow rate of the waste gas by depositing catalytic components on a monolithic catalyst carrier to form a catalyst deposited layer and also giving the prescribed temp. distribution different situationally to the deposited layer. CONSTITUTION:A monolithic catalyst carrir is manufactured by forming catalyst depositing layers on the inner surfaces of narrow pores of base material for column-shaped monolithic catalyst which has many narrow pores stretching in the axial direction. After the monolithic catalyst carrier is immersed into the slurry of catalytic components, a draft pipe is coaxially connected to one end face of the catalyst carrier and the neighborhood of axial core part of the catalyst carrier is heated by blowing heated air via the draft pipe. Thereby, a catalyst deposited layer having the temp. distribution is formed wherein the depositing layer of the neighborhood of the axial core part large in the flow rate of the waste gas is made to higher temp. in the catalyst depositing layer. Then, the catalyst is formed by drying and calcining the catalyst deposited layer. As the carrier, alumina is used and as the catalytic components, platinium and palladium or the like are used.

Inventors

• 👤 Mitsuru Minami
• 👤 充 南

Bibliographic Details