Patent ID: 7025947

Claim:
A method of producing hydrogen gas, comprising the step of: converting methanol to hydrogen gas without generating CO gas by oxidative steam reforming reaction wherein partial oxidation of methanol and steam reforming reaction are performed simultaneously in the presence of both air and steam using a CuZnAlZr catalyst, wherein the catalyst is produced by the steps of reacting mixture of aqueous solutions of each nitrate of Cu, Zn, Al, and Zr with an aqueous NaOH solution and aqueous Na 2 CO 3 solution at pH of about 9; aging at about 65° C., filtering, washing, and drying this precipitate to prepare a catalyst precursor consisting of a CuZnAlZr layered double hydroxide; and then calcining this catalyst precursor in an air ambient atmosphere at about 450° C. to obtain a CuZnAlZr oxide.