双金属催化剂还原性能研究  

Investigation on reduction performance of bimetallic catalyst

作　　者：王晓亮 Wang Xiaoliang(Yantai Youli Chemical Technology Co.,Ltd.,Yantai 264005,Shandong,China)

机构地区：[1]烟台友利化工科技有限公司,山东烟台264005

出　　处：《工业催化》2023年第9期56-59,共4页Industrial Catalysis

摘　　要：采用共沉淀法制备CuO-CoO和CuO-Fe_(2)O_(3)催化剂。采用程序升温还原(TPR)技术测定纯CuO、Co_(3)O_(4)、Fe_(2)O_(3)和CuO-CoO、CuO-Fe_(2)O_(3)催化剂的还原动力学参数。结果表明,添加CuO能促进Co_(3)O_(4)和Fe_(2)O_(3)的还原,两种催化剂的还原温度向低温方向偏移,还原活化能明显降低。并且,Cu的存在还改变了氧化铁的还原历程。The catalysts of CuO-CoO and CuO-Fe_(2)O_(3)were prepared by co-precipitation method.The reduction kinetic parameters of pure CuO,Co_(3)O_(4)and Fe_(2)O_(3)as well as CuO-CoO and CuO-Fe_(2)O_(3)catalysts were determined using temperature programmed reduction(TPR)technique.The results demonstrated that the reduction of Co_(3)O_(4)and Fe_(2)O_(3)was improved by the addition of CuO,the reduction temperature of both catalysts were moved to the lower temperature and the reduction activity energy were significantly reduced.The reduction mechanism of iron oxide was changed by the addition of Cu.

关 键 词：催化化学 双金属催化剂 程序升温还原 氧化铜 氧化钴 氧化铁 

分 类 号：TQ426.82[化学工程] O643.36[理学—物理化学]