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以氧氯化锆和硝酸锰为主要原料,采用So l-G e l-VFD技术制备了M nO x/Z rO2超细粉体材料。用XRD,TG-DSC,TEM和BET等技术对试样进行了表征,用微反应器-气相色谱仪在线研究了试样不同配合比例对试样催化还原NO的活性的影响。结果表明:用So l-G e l-VFD技术可制得粒子尺寸约为20 nm、具有高催化活性的负载型M nO x/Z rO2纳米催化剂,锰由低价向高价转变。添加了C e组分能提高M nO x/Z rO2纳米催化剂催化还原NO的活性。
The M nO x / ZrO 2 ultrafine powder materials were prepared by SoI-G e l-VFD using zirconium oxychloride and manganese nitrate as the main raw materials. The samples were characterized by XRD, TG-DSC, TEM and BET techniques. The effects of the different proportions of the samples on the catalytic reduction of NO were investigated by microreactor-gas chromatography. The results show that the supported M nO x / ZrO 2 nanocatalysts with high catalytic activity and particle size of about 20 nm can be obtained by using So-G e l-VFD technology. The addition of Ce can improve the catalytic reduction of NO by M nO x / ZrO 2 nanocatalyst.