| abstract |
A novel adsorbent for selectively separating and purifying carbon dioxide and acidic gases such as SOx and NOx contained in gas discharged from factories, automobiles, etc., or air, and the like A method for separating and purifying carbon dioxide and acid gas used is provided. An ionic liquid composed of an amide type or imidazole cation, or an adsorbent composed of a polymer material, an inorganic material, or an organic material containing the ionic liquid, an acid gas of carbon dioxide, SOx, NOx, or them. The gas is physically absorbed by the adsorbent by contacting the supercritical fluid containing the gas. [Selection figure] None |