MONOLITHIC METAL-BASED CATALYST, AND PREPARATION METHOD AND APPLICATION THEREFOR

摘要

The present invention relates to a monolithic metal-based catalyst, and a preparation method and application therefor. A carrier of the catalyst is an Fe-Cr-Al alloy mesh or an Fe-Cr-Al alloy sheet, and a mixture of Al2O3 and a precious metal active component is evenly deposited on at least one side of the carrier. A flame spray pyrolysis deposition method is used for the monolithic metal-based catalyst, and the Al2O3 and the precious metal active component are deposited on the carrier in one step. The monolithic metal-based catalyst is used for a catalytic reaction requiring heating and warming up. Via the preparation method, the thickness of a thin layer of the Al2O3 and the precious metal active component on the carrier is even, significantly reducing the amount of the precious metal active component, and reducing the manufacturing costs of the catalyst, at the same time as strengthening the bond strength between the Al2O3 and the precious metal active component and the metal-based carrier. The thermal shock resistance of the catalyst is improved, and the catalyst also has good catalytic activity and stability.