MnO_x-Fe_2O_3催化剂低温催化氧化甲醛性能研究  

Catalytic Performance of MnO_x-Fe_2O_3 Catalyst for Formaldehyde Oxidation at Low Temperature

作　　者：高小红[1] 章小林[2] 

机构地区：[1]武汉理工大学华夏学院化学与制药工程系,湖北武汉430223 [2]湖北省化学研究院国家CO变换催化剂气体净化剂重点工业性实验基地,湖北武汉430223

出　　处：《信阳师范学院学报（自然科学版）》2016年第1期88-91,共4页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：湖北省科技发展专项(KJFZ-JC2013005);武汉理工大学华夏学院科研基金重点项目

摘　　要：利用共沉淀法合成了一种MnO_x-Fe_2O_3催化剂,该催化剂具有低温氧化甲醛的特点,HCHO完全转化温度为80℃.研究了温度、空速、氧含量、入口HCHO含量对催化剂性能的影响.500h寿命试验发现催化剂活性下降.FTIR表征结果表明碳酸盐化是导致催化剂失活的主要原因.MnOx-Fe2O3 mixed oxides prepared by coprecipitation method vere investigated for the complete oxidation of formaldehyde. The catalyst showed 100% formaldehyde conversion at a temperature as low as 80℃. The effect of reaction temperature, space velocity, inlet formaldehyde and O2 content on the catalytic behavior of the MnOx-Fe2O3 mixed oxides were further examined. The life test of the catalyst for 500 hours showed that the catalytic activity of the MnOx-Fe2O3 was unstable. The FTIR analyses suggested that carbonatation was the main reason for catalyst deactivation.

关 键 词：MnOx-Fe2O3 共沉淀 甲醛 低温氧化 失活 

分 类 号：TQ053.2[化学工程]