Activated carbon fiber sheet for motor vehicle canister
AssigneeNippon Paper Industries Co., Ltd.
InventorsDaisuke Imai, Yoshihide Watanabe, Yuu Takata, Shunsuke Ozawa, Chie Yoshida, Kenichi Fujino
Life of this patent
Estimating the term…
Abstract
An object of the present invention is to provide a new form of adsorbent suitable for a motor vehicle canister. An activated carbon fiber sheet satisfies one or two or more of conditions for indices, such as a specific surface area, a pore volume of pores having a given pore diameter, and a sheet density. An embodiment, for example, may have: a specific surface area ranging from 1400 to 2200 m2/g; a pore volume ranging from 0.20 to 1.20 cm3/g for pores having pore diameters of more than 0.7 nm and 2.0 nm or less; and a sheet density ranging from 0.030 to 0.200 g/cm3.
Claims9
An activated carbon fiber sheet for a motor vehicle canister, comprising:
- a specific surface area ranging from 1400 to 2200 m2/g;
- a pore volume ranging from 0.20 to 1.20 cm3/g for pores having pore diameters larger than 0.7 nm and equal to or smaller than 2.0 nm;
- and
- a sheet density ranging from 0.030 to 0.200 g/cm3.
A method of producing an activated carbon fiber sheet for a motor vehicle canister, comprising:
- carbonizing and activating a raw material sheet having one or both of a phosphoric acid-based catalyst and an organic sulfonic acid-based catalyst;
- and
- performing compaction such that the activated carbon fiber sheet has a density ranging from 0.030 to 0.200 g/cm3.
Dependencies are inferred from the claim text.