PREPARATION METHOD OF CATALYST COMPRISING A RUTHENIUM-CONTAINING CATALYST LAYER FORMED ON THE BODY SURFACE

摘要

The present invention relates to a method for preparing a catalyst comprising a ruthenium-containing catalyst layer highly dispersed with a uniform thickness on a surface of a substrate having a structure, which comprises first aging a mixed solution of a ruthenium precursor-containing solution and a precipitating agent to form a ruthenium-containing precipitate seeds, secondarily aging the first aged mixed solution to grow the seeds thereby forming ruthenium-containing precipitate particles, and then contacting the particles with a substrate to deposit the particles on the surface of the substrate. Since the catalyst has a structure in which the round shaped ruthenium-containing precipitate particles are piled to form the ruthenium-containing catalyst layer, it has a large specific surface area. Thus, the catalyst may exhibit excellent catalytic performance in various reactions for producing hydrogen using a ruthenium catalyst.

主权项

1. A method of preparing a catalyst comprising a ruthenium-containing catalyst layer formed on a surface of a substrate having a structure, which comprises:
adding a precipitating agent to a ruthenium (Ru) precursor-containing solution to obtain a mixed solution (step 1); first aging the mixed solution of the step 1 at 10° C. to 40° C. to form ruthenium-containing precipitate seeds (step 2); secondarily aging the first aged mixed solution at 80° C. to 100° C. to grow the ruthenium-containing precipitate seeds, thereby forming ruthenium-containing precipitate particles (step 3); contacting the secondarily aged mixed solution with the substrate to coat the surface of the substrate with the ruthenium-containing precipitate particles, thereby inducing the formation of a ruthenium-containing layer (step 4); and conducting a heat treatment of the ruthenium-containing layer (step 5).