铈对铁系无铬变换催化剂还原的影响  

Effects of Cerium on Reduction of Non-Chromium Iron Based CO Shift Catalyst

作　　者：苏运来[1] 胡捷 马卓娜[1] 杜宝石[1] 郭益群[1] 

机构地区：[1]郑州大学化学化工学院,河南郑州450052 [2]郑州纺织高等专科学校化纺系,河南郑州450052

出　　处：《中国稀土学报》2001年第3期272-274,共3页Journal of the Chinese Society of Rare Earths

基　　金：河南省教委自然科学基金资助项目 !(199915 0 0 0 6)

摘　　要：以XRD ,TPR ,SEM ,XPS为手段研究了含Ce铁系无铬变换催化剂的还原过程。在氧化态样品中 ,Ce有细化颗粒的作用 ,在还原过程中 ,Ce有表面富集现象 。The effects of cerium on reduction of non chromium iron based CO shift catalyst were studied by XRD, TPR, SEM, and XPS. The results show that cerium refines Fe 2O 3 grains and accumulates on the surface of catalyst in the process of reduction, which leads to the decrease of the initial reduction temperature and increase the final reduction temperature.

关 键 词：铈 吸附 CO 变换 一氧化碳 还原 铁系无铬变换催化剂 化肥工业 

分 类 号：TQ440.4[化学工程—化学肥料工业] TQ426.94