| abstract |
The present invention relates to a gas treatment agent for removing carbon monoxide, hydrogen, carbon dioxide and water vapor in a gas at the same time, which can maintain a high oxidation activity and have a long life time, a manufacturing method therefor and a gas refining method. More specifically, the present invention relates to a gas treatment agent made of a catalyst made of an inorganic porous material layer containing at least one selected from a group consisting of platinum, palladium, rhodium and ruthenium, or oxides thereof and an adsorbent, and a manufacturing method therefor, a gas refiner, a gas refining method and a gas refining apparatus using the gas treatment agent. |