To provide a metal-supported zeolite molded material wherein sulfur compounds containing not only thiols and sulfides but also carbonyl sulfide in hydrocarbon fuel or a dimethyl ether fuel can be effectively removed to low concentrations and a production method therefor, and an adsorbent for removing sulfur compounds containing the metal-supported zeolite molded material, and to provide a method for effectively producing hydrogen using this adsorbent from the hydrocarbon fuel or the dimethyl ether fuel after desulfurization and a fuel cell system using its hydrogen.
The metal-supported zeolite molded material has a metal component both inside and outside a zeolite crystal. The production method for the metal-supported zeolite molded material is so constituted that a zeolite molded material is used, a metal ion is supported in inside of the zeolite crystal by metal-exchanging and then a metal or a metal compound is supported outside the zeolite crystal. The adsorbent for removing the sulfur compound has this metal-supported zeolite molded material. Hydrogen is produced from the hydrocarbon fuel or the dimethyl ether fuel after desulfurization by using this adsorbent. The fuel cell system using its hydrogen is provided.
COPYRIGHT: (C)2006,JPO&NCIPI
Takekoshi Takeji
Yoshimi Kawashima
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Masamichi Tohei