The hydrogen purification device

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PROBLEM TO BE SOLVED : To provide a hydrogen refining apparatus by which heating or the like on starting can easily be performed, and which has high CO purifying efficiency. SOLUTION : The hydrogen refining apparatus is provided with a carbon monoxide denaturation catalytic body which removes carbon monoxide from a reforming gas containing hydrogen, carbon monoxide and water vapor. In the carbon monoxide denaturation catalytic body, at least one kind of rare earth elments or transition metal elements selected from Cu, Fe, Cr, Ce, Re, Mo and W, and at least one noble metal selected from Pt, Pd, Rh and Ru are ion-exchanged with zeolite, or are carried thereon.