Activated carbon fiber sheet for automobile canisters

摘要

PROBLEM TO BE SOLVED: To provide a new form of adsorbent suitable for a canister mounted on an automobile. SOLUTION: An activated carbon fiber sheet satisfying one or more requirements among various indexes such as specific surface area, volume of pores having a predetermined pore diameter, and sheet density. For example, the pore volume of a pore having a specific surface area of 1400 to 2300 m2 / g and a pore diameter of more than 0.7 nm and 2.0 nm or less is 0.25 to 0.70 cm3 / g, and the pore diameter is The abundance ratio R0.7 / 2.0 of the pore volume of the pores having a pore diameter of 0.7 nm or less to the pore volume of the pores having a pore diameter of 2.0 nm or less is 5% or more and less than 25%. Moreover, an activated carbon fiber sheet having a sheet density of 0.020 to 0.200 g / cm3 can be an embodiment. [Selection diagram] None