Adsorbent, canister, and method for producing adsorbent
AssigneesOsaka Gas Chemicals Co., Ltd., Mahle International GmbH
InventorsKenji Seki, Koji Yamasaki
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Abstract
An object of the present invention is to provide an adsorbent and a canister which can improve adsorption performance and purge performance. An adsorbent 10 to be packed in a canister includes: a cylindrical outer wall 10A, and a plurality of ribs 10B for partitioning along an axis of the outer wall 10A into a plurality of cells, wherein the thickness dα of the outer wall 10A and the thickness dβ of the ribs 10B is less than 0.6 mm, the thickness of at least either of the outer wall 10A and the ribs 10B exceeds 0.4 mm, the outer diameter D of the outer wall 10A is 3.5 mm or more and 40 mm or less, a BWC exceeds 3.0 g/dL, and purge efficiency((amount of butane adsorbed−amount of butane retained)/amount of butane adsorbed) is more than 0.86 or more.
Claims35
An adsorbent to be packed in a canister, comprising:
- a cylindrical outer wall, and
- a plurality of ribs for partitioning along an axis of the outer wall into a plurality of cells,
- wherein a thickness of the outer wall and a thickness of the plurality of ribs are less than 0.6 mm, a thickness of at least either of the outer wall and the plurality of ribs exceeds 0.4 mm,
- wherein an outer diameter of the outer wall is 3.5 mm or more and 40 mm or less,
- wherein a butane working capacity (BWC) in a BWC evaluation method in accordance with ASTM D5228 exceeds 3.0 g/dL, and
- wherein purge efficiency represented by the following equation in the BWC evaluation method in accordance with ASTM D5228 is 0.86 or more, and the purge efficiency is defined as a difference of an amount of butane adsorbed minus an amount of butane retained, with the difference divided by the amount of butane adsorbed.
An adsorbent to be packed in a canister, comprising:
- a cylindrical outer wall, and
- a plurality of ribs for partitioning along an axis of the outer wall into a plurality of cells,
- wherein a thickness of the outer wall and a thickness of the plurality of ribs are less than 0.6 mm,
- wherein an outer diameter of the outer wall is 3.5 mm or more and 40 mm or less,
- wherein a metal oxide of 10% by mass or more and 70% by mass or less is included in the adsorbent with respect to the adsorbent,
- wherein a butane working capacity (BWC) in a BWC evaluation method in accordance with ASTM D5228 exceeds 3.0 g/dL, and
- wherein purge efficiency represented by the following equation in the BWC evaluation method in accordance with ASTM D5228 is 0.86 or more, and the purge efficiency is defined as a difference of an amount of butane adsorbed minus an amount of butane retained, with the difference divided by the amount of butane adsorbed.
Dependencies are inferred from the claim text.