负载型金属氧化物催化剂分解臭氧的研究

用浸渍法制备了活性炭、γ-氧化铝和分子筛负载的MnO2，CuO，Fe2O3催化剂，并考察了它们对臭氧分解的催化性能。结果表明，MnO2催化剂优于CuO，Fe2O3，催化剂，活性炭为载体的催化剂优于γ-氧化铝和分子筛为载体的催化剂。温度对臭氧催化分解影响很大，在90℃时，MnO2／AC催化剂对臭氧的去除率可达80％以上。当存在一定浓度的水蒸气时，湿度越大，催化性能越差。当臭氧初始质量浓度低于50mg／L时，随着臭氧初始浓度的增加，催化性能有一定的下降。

Supported Metal Oxide Catalysts for Ozone Decomposition

Activated carbon, γ-Al2O3 and molecule sieve-supported MnO2, CuO and Fe2O3 catalysts were prepared by the impregnation method. And, the activities of catalytic decomposition of ozone were studied over these catalysts. The results show that catalytic activity of MnO2 catalyst is superior to those of CuO and Fe2O3 catalysts, and activated carbon is more suitable as a support than γ-Al2O3 and molecule sieve. The temperature has a significant effect on catalytic activity. The conversion rate of ozone decomposition over MnO2/AC is more than 80% at 90℃. The higher the humidity is, the lower the catalytic activity is. When the initial ozone concentration is lower than 50 mg/L, the increase of the initial ozone concentration results in a decrease in catalytic activity.