アルカリ土類金属過酸化物による一酸化窒素,ホルムアルデヒドの除去における結晶水の影響

抄録

Previously reported data on the efficiency of removal of nitrogen monoxide and formaldehyde by magnesium peroxide (MgO₂/nH₂O, n=0.5) suggested that the hydrated water contained in peroxides plays a role for the removal reaction. In this study, basic research was made about the effects of hydrated water on removal efficiency, being apart from the engineering object to remove pollutants from an air. Commercially available hydrated strontium peroxide (SrO₂.8H₂O) was used as an absorbent, and its efficiency to remove nitrogen monoxide and formaldehyde was measured at various relative humidities; the following results were obtained: Peroxides of alkaline earth metals react with water vapor in the sample gas, to release atomic oxygen, but when hydrated water is present in the peroxide it serves as a substitute for the water in the sample gas. Therefore, when a hydrated peroxide is used for oxidative removal of pollutants, the sample gas is not in need of water vapor.