Catalyst for producing hydrogen and hydrogen production method using the same

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PROBLEM TO BE SOLVED : To obtain an improved iron based catalyst which is stable for a decomposition reaction of a hydrocarbon even in co-presence of oxidative gas and in which a catalytic activity is maintained for a long period of time; and to provide a manufacturing method for hydrogen using the catalyst. SOLUTION : In the catalyst for manufacturing hydrogen used for the decomposition reaction of the hydrocarbon, an iron-containing substance and a substance containing at least one kind of metal selected from the group IIa metals and group VIIa metals and rare earth metals in the periodic table are carried on an alumina based carrier. In the method for manufacturing hydrogen, the hydrocarbon is decomposed by using this catalyst.