Kinetics of NO adsorption and oxidation over powder activated carbon at low temperature in a batch fluidized bed reactor was studied.The results show that when oxygen is present,activated carbon acts as an adsorbent and a catalyst for NO oxidation into NO2 and a stable NO conversion rate is achieved.Powder activated carbon presents higher activity of NO adsorption and oxidation than granular activated carbon.The NO conversion rate increases with O2 and NO concentration increasing.The apparent reaction order of NO oxidation in the stable stage for O2 varies from 0.9 to 0.2 and the apparent reaction order of NO oxidation in the stable stage for NO is 1.3.Adsorption and oxidation of NO over powder activated carbon includes the formation of（NO）2 and the disproportionation of NO2.%基于间歇式流化床反应系统研究流态化粉末活性炭低温吸附氧化NO的动力学。结果表明：O2存在时,活性炭作为吸附剂和催化剂,将NO氧化成NO2,达到稳定的NO转化率,粉末活性炭的性能优于颗粒活性炭的性能;稳定阶段NO的转化率随O2浓度、NO浓度的增加而增大,NO的氧化速率对O2的表观反应级数从0.9变化到0.2,对NO的表观反应级数为1.3;粉末活性炭低温吸附氧化NO过程包括NO二聚体（NO）2的生成和NO2的歧化反应。
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