Abstract: An apparatus for producing hydrogen, which comprises: a. a heated steam reforming stage (1) with a reforming catalyst to convert gaseous or vaporizable hydrocarbons and water into hydrogen, carbon monoxide and further reformer products; b. at least one stage downstream of the steam reforming stage for the catalytic conversion of the mixture of hydrogen, carbon monoxide and excess steam leaving the steam reforming stage (shift stage) (2); and c. a fine purification stage (3) downstream of the shift stage(s) for the catalytic lowering of the residual carbon monoxide content of the conversion products by selective methanization, is described. In the apparatus, the shift stage (2) and the fine purification stage (3) are configured as a unitary hollow body (exothermic catalyst stage).

Abstract: The invention relates to a device for the generation of hydrogen, comprising; (a) a heated steam reformation stage, with a reformer catalyst for the conversion of gaseous or vaporizable hydrocarbons and water into hydrogen, carbon monoxide and further reformation products; (b) at least one stage, arranged after the steam reformation stage, for the catalytic conversion of the mixture of hydrogen, carbon monoxide and excess steam emanating from the steam reformation stage (shift step); and (c) a fine purification stage after the conversion stages for the catalytic reduction of the residual carbon monoxide content in the conversion products. The invention is characterized in that the conversion stages and the fine purification stage are each embodied as hollow bodies with an annular chamber for housing the corresponding catalyst.

Abstract: Disclosed is a mixed oxide catalyst, preferably for selective oxidation of CO in hydrogen rich gas mixtures, or in oxygen containing gas mixtures in the presence of water and carbon dioxide, comprising about 15 to 30 at.-% Cu, about 55 to 77 at.-% Mn and about 7.5 to 10 at.-% Ce.