Absorbent material for low-molecular-weight organic gas and fuel vapor treatment apparatus using same
First Claim
1. A low-molecular-weight organic gas absorbent material comprising a porous material having an average pore size of 10 to 100 nm impregnated with one or more organic compounds having a boiling point of 200.degree. C. or more, and selected from carboxylic acids, in a proportion of 10 wt % or more based on the porous material, wherein the organic compounds are in the form of liquid or semi-solid at an ordinary temperature.
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Abstract
Provided are a low-molecular-weight organic gas absorbent material including a porous material having an average pore size of 10 to 200 nm impregnated with one or more organic compounds having 10 or more carbon atoms in a proportion of 10 wt % or more based on the porous material, and a fuel vapor treatment apparatus for an internal combustion engine using this low-molecular-weight organic gas absorbent material. This low-molecular-weight organic gas absorbent material sufficiently absorbs and removes low-molecular-weight organic gases even for a porous material having large pores which cannot adsorb low-molecular-weight organic gases such as butane and the like.
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9 Claims
- 1. A low-molecular-weight organic gas absorbent material comprising a porous material having an average pore size of 10 to 100 nm impregnated with one or more organic compounds having a boiling point of 200.degree. C. or more, and selected from carboxylic acids, in a proportion of 10 wt % or more based on the porous material, wherein the organic compounds are in the form of liquid or semi-solid at an ordinary temperature.
Specification