AMMONIA DECOMPOSITION CATALYST AND METHOD FOR PRODUCING THE SAME, AND APPARATUS USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an ammonia decomposition catalyst which at the same time realizes adsorption of ammonia by pores and optimization of grain size of metal particles, a method of producing a decomposition catalyst, a method of decomposing ammonia, and an apparatus.SOLUTION: Provided is an ammonia decomposition catalyst comprising: metal particles having ammonia decomposition ability; and a porous material having pores of a diameter smaller than a particle size of the metal particles and coming in contact with the metal particles. Also provided are: the ammonia decomposition catalyst comprising a supported metal catalyst having metal particles supported on a substrate, where the porous material is a coating layer which coats the supported metal catalyst; the ammonia decomposition catalyst further having the metal particles supported on the coating layer and having a surface of the supported metal particles coated with a porous material; and the ammonia decomposition catalyst in which the metal particles are particles of a transition metal or a noble metal, the porous material is at least one selected from ZSM5, silicalite, and titanium-containing zeolite, and the support is at least one selected from moldenite, ZSM5, ferrierite, beta type zeolite, and Y type zeolite.SELECTED DRAWING: Figure 3