Patent ID: 8360034

Claim:
A method of producing granular fuel vapor adsorbent to be used for a fuel vapor storage canister, the method comprising: mixing powdery activated carbon, a binder comprising at least one selected from the group consisting of bentonite, silica sol and alumina sol, a powdery material which is solid at ordinary temperature and able to evaporate, sublime or decompose at temperatures made during baking, and water to form a mixture; forming the mixture into a cylindrical shape; and baking the formed mixture in an atmosphere of inert gas to form cylindrical granules, after drying, each cylindrical granule having micropores forming a microporous structure and macropores forming a macroporous structure, the micropores being derived from the powdery activated carbon, the macroporous resulting from the powdery material, the micropores being connected to the macropores so that fuel vapor flower between the micropores and the macropores.