温度对水热合成制备LaMnO_3催化剂的性能影响  

Influence of temperature on LaMnO_3 catalysts prepared by hydrothermal synthesis

作　　者：郑建东[1] 程淑芬[1] 侯豹[1] 

机构地区：[1]滁州学院材料与化学工程学院,安徽滁州239000

出　　处：《应用化工》2012年第12期2075-2077,共3页Applied Chemical Industry

基　　金：安徽省教育厅自然科学研究重点项目(KJ2012A213);滁州学院校级重点教研项目(2011jyz007);安徽省应用化学省级重点学科建设(200802187C);滁州学院大学生科研项目(2012XS17)

摘　　要：以尿素水解为基础,采用水热合成法制备了一系列以Mn为活性组分的钙钛矿催化剂(LaMnO3),研究了反应温度对催化剂的热稳定性、比表面积及其催化甲烷燃烧性能的影响。结果表明,当前驱液温度为60℃,催化剂经700℃焙烧6 h后,甲烷转化率可达95%以上,比表面积为14.14 m2/g。A series of perovskite catalysts （ LaMnO3 ） using Mn as the active component were prepared by hydrothermal synthesis based on hydrolysis of urea. The influences of reaction temperatures working on the thermal stability, specific surface area and catalytic methane catalytic combustion activity were stud- ied. The results showed that when the precipitation temperature was 60 ℃, the catalyst calcined at 700 ℃ for 6 h haft a good catalytic activity and the methane conversion rate was up to 95%. The specific surface area of prepared catalysts was about 14.14 m2/g.

关 键 词：尿素 水热合成法 温度 催化燃烧 

分 类 号：O643[理学—物理化学]