钴锰掺镝复合催化剂的制备与性能研究

Studies on the Preparation and Properties of Cobalt-manganese Composite Catalyst Doped with Dysprosium

通过掺合稀土元素镝对钴锰催化剂的性能进行改性,并在料液中加入明胶进行超声水热处理,然后通过TG-DSC、SEM、XRD、甲烷催化燃烧试验等方法对前驱体及复合催化剂的结构和性能进行表征,结果表明:催化剂颗粒内部孔洞密布,有较大的比表面,其催化活性比改性前的催化剂提高约75%。

In order to improve the catalytic property of cobalt-manganese catalysts,rare earth element dysprosium was doped,and gelatin was added to the feed liquid followed by ultrasonic hydrotharmal treatment.The structure and properties of the precursor and the composite catalysts were characterized by TG-DSC、SEM、BET and catalytic combustion of methane,etc.The results indicated that the porous catalyst particles had a much greater specific surface area,and the catalytic activity in comparison with unmodified catalyst increased about 75%.