Method for producing hydrogen-containing gas for fuel cell
AssigneeAsahi Kasei Kogyo Kabushiki Kaisha
InventorsYohei Fukuoka, Keizo Tomokuni, Hitoshi Nakajima
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Abstract
An efficient method for producing a hydrogen-containing gas for a fuel cell by using a gas produced by reforming reaction of an organic compound is disclosed. The method comprises the following steps: adding an oxygen-containing gas to a hydrogen-containing gas containing carbon monoxide to form a mixed gas, and bringing the mixed gas into contact with a catalyst comprising a ruthenium metal as a main component and having a carbon monoxide adsorption of not less than 1 mmol/g-ruthenium and a carbon monoxide adsorption index of not less than 0.5, to thereby oxidize and remove carbon monoxide.
Claims5
A method for producing a hydrogen-containing gas for a fuel cell which comprises:
- adding pulse an oxygen-containing gas to a hydrogen-containing gas containing carbon monoxide to form a mixed gas, said hydrogen-containing gas being produced by a reforming reaction of an organic compound;
- and
- bringing said mixed gas into contact with a catalyst comprising a ruthenium metal as a main component and having a carbon monoxide adsorption of not less than 1 mmol/g-ruthenium and a carbon monoxide adsorption index as defined below of not less than 0.5, to thereby oxidize and remove carbon monoxide:
- Adsorption index=ΣX1/ΣX=ΣX1/(ΣX1+ΣX2)
- wherein
- A=amount of carbon monoxide introduced/pulse
- =0.002 mmol/pulse
- =0.4 mmol/g-ruthenium/pulse;
- X=adsorption/pulse;
- Amount adsorbed=ΣX;
- and
- B=reversible adsorption,
- wherein X at the time when (X+B)/A≧0.9 is taken as X1, and X at the time when (X+B)/A<0.9 is taken as X2.
Dependencies are inferred from the claim text.