Cataler Corporation

Hirokazu Aono

Takayuki Suzuki

Yuji Mochizuki

Tokio Oi

The present invention provides an activated carbon having an average length/average diameter (L/D) of 0.8 to 1.2 and a difference between the 1/1-volume benzene adsorption rate and the 1/10-volume benzene adsorption rate of 6.0 g/100 mL or more, and a canister and an intake air filter utilizing such activated carbon as an adsorbent. The activated carbon has a substantially spherical configuration and excellent hydrocarbon adsorption/desorption capacity. A canister and an intake air filter utilizing such activated carbon as an adsorbent have excellent hydrocarbon adsorption/desorption capacity.

Activated carbon and canister and intake air filter utilizing the same

Activated carbon in which the residual amount of hydrocarbon (HC) can be reduced and a canister using such activated carbon are provided. Activated carbon in which the residual amount of butane is determined to be 1.2 g/100 ml or less after butane is adsorbed thereon and desorbed therefrom in accordance with the determination of BWC (ASTM D-5228) and a canister using such activated carbon as an adsorbent are provided.

Activated carbon and canister using the same

A process for producing an activated carbon includes the step of adsorbing an organic compound onto an activated carbon comprising pores which exhibit a wide pore diameter distribution, thereby selectively closing smaller pores which have a small pore diameter. In accordance with the production process, it is possible to produce activated carbons which are good in terms of the adsorption-desorption characteristic.

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Shizuoka, Japan

Hirokazu Aono