Formed adsorber for canister
AssigneeNippon Paper Industries Co., Ltd.
InventorsDaisuke Imai, Yoshihide Watanabe, Yu Takata, Dongyeon Ryu
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Abstract
An object is to provide a new form of formed adsorbers suitable for high performance canisters. A formed adsorber for a canister is to satisfy the following conditions. The formed adsorber satisfies a condition where P0.2/100 expressed by Equation 1: P0.2/100=X÷Y×100 (Equation 1) is 120% or less. In Equation 1 above, X represents an amount of n-butane gas adsorbed per 100 parts by weight of the adsorbing material at 25° C. under an atmosphere where a gas pressure of n-butane gas is 0.2 kPa, and Y represents an amount of n-butane gas adsorbed per 100 parts by weight of the adsorbing material at 25° C. under an atmosphere where a gas pressure of n-butane gas is 100 kPa.
Claims13
A formed adsorber, comprising:
- activated carbon and a binder, wherein
- a content of the binder is 0.3 to 20 parts by weight relative to 100 parts by weight of the activated carbon,
- the formed adsorber has a P0.2/100 of 18% or more, a P100/50 of 120% or less, and an effective adsorption-desorption ratio for n-butane of 50% or more, wherein
- P0.2/100 is expressed by Equation 1:
- P0.2/100=X÷Y×100 (Equation 1), and
- P100/50 is expressed by Equation 2:
- P100/50=Y÷Z×100 (Equation 2),
- in Equation 1, X represents an amount of n-butane gas adsorbed (unit:
- parts by weight) per 100 parts by weight of the formed adsorber at 25° C. under an atmosphere where a gas pressure of n-butane gas is 0.2 kPa, and
- Y represents an amount of n-butane gas adsorbed (unit:
- parts by weight) per 100 parts by weight of the formed adsorber at 25° C. under an atmosphere where a gas pressure of n-butane gas is 100 kPa,
- in Equation 2, Z represents an amount of n-butane gas adsorbed (unit:
- parts by weight) per 100 parts by weight of the formed adsorber at 25° C. under an atmosphere where a gas pressure of n-butane gas is 50 kPa, and
- Y is the same as Y in Equation 1.
Dependencies are inferred from the claim text.