Catalysts reforming methane gases into hydrogen and methods for synthesizing the same, and methods for reforming methane gases using said catalysts

摘要

A method for synthesizing a catalyst which reforms a methane gas into a hydrogen gas efficiently at a relatively low temperature comprising a palladium deposition step in which a manganese dioxide having a ramsdellite-type crystal structure is immersed in a palladium-containing aqueous solution to allow the palladium to be deposited on the surface of said manganese dioxide, and a heat treatment step in which said manganese dioxide having the palladium deposited thereon is heated under a reducing atmosphere to change said manganese dioxide to a manganese oxide Mn3O4 having the palladium carried thereon.

主权项

1. A method for synthesizing a methane gas reforming catalyst which is a method for synthesizing a catalyst which reforms a methane gas into a hydrogen gas comprising:
a palladium deposition step in which a manganese dioxide having a ramsdellite-type crystal structure is immersed in a palladium-containing aqueous solution to allow a metallic palladium having a particle size of 10 nm or less to be deposited on a surface of said manganese dioxide in the solution, and a heat treatment step in which said manganese dioxide having the metallic palladium deposited thereon is heated under a gas mixture of methane gas and argon gas atmosphere to change said manganese dioxide to a manganese oxide Mn3O4 having the metallic palladium carried thereon.