PRODUCTION OF CATALYST CARRIER FOR PURIFICATION OF EXHAUST GAS

摘要

PURPOSE:To enhance the adhesion of a metal honeycomb to an alumina coating layer by coating a metal substrate with activated alumina powder by electrophoresis or electrodeposition to form a catalyst carrier for purification of exhaust gas. CONSTITUTION:A metal substrate is coated with activated alumina powder by electrophoresis or electrodeposition to produce a catalyst carrier for purification of exhaust gas. Otherwise, the metal substrate may be coated with activated alumina powder treated with a rare earth metal oxide by electrophoresis or electrodeposition to produce a catalyst for purification of exhaust gas. The surface of the substrate is preferably pretreated by etching or sandblast so as to increase the specific surface area. The pref. grain size of the activated alumina powder is 1-5mum.