| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for removing nitrogen monoxide or nitrogen dioxide contained in an exhaust gas and the atmosphere together with excess oxygen inexpensively and efficiently. SOLUTION: A gas containing nitrogen monoxide and oxygen the amount of which is larger than that of nitrogen monoxide is brought into contact with an activated carbon material, and, after nitrogen monoxide being adsorbed by the activated carbon material, the activated carbon material is heated sharply to 250 deg.C or more at a temperature increasing speed of 200 deg.C/min or more so that at least a part of the adsorbed nitrogen monoxide is reduced into molecular nitrogen, and a part of the adsorbed nitrogen monoxide is fixed and held in the activated carbon material.</p> |
