BaO对Al_2O_3的改性及MnO_x/BaO-Al_2O_3对甲烷燃烧的催化活性  

Modification of Al_2O_3 by BaO and catalytic performances of MnO_x /BaO-Al_2O_3 in combustion of methane

作　　者：徐秀峰[1] 潘燕飞[2] 刘艳霞 安立敦[1] 

机构地区：[1]烟台大学应用催化研究所,烟台264635 [2]烟台大学分析中心,烟台264635

出　　处：《现代化工》2001年第12期30-33,共4页Modern Chemical Industry

基　　金：山东省科技计划项目 (No .981 2 0 640 3)

摘　　要：以Mn(CH3COO) 2 ·4H2 O为前驱体 ,制备了MnOx/Al2 O3 和MnOx/BaO Al2 O3 系列催化剂 ,用X 射线衍射 (XRD)和程序升温还原 (TPR)进行了表征 ,考察了加入BaO对Al2 O3 的热稳定性及对MnOx/BaO Al2 O3 还原性能的影响。以甲烷燃烧为模型反应 ,考察了MnOx/BaO Al2 O3的催化活性。结果表明BaO Al2 O3 负载MnOx 催化剂对甲烷燃烧的活性比MnOx/Al2 O3 有明显提高 ,Ba在Al2 O3 中的最佳质量分数为 5 %MnO x /Al 2O 3 and MnO x /BaO Al 2O 3 series catalysts were prepared by using Mn(CH 3COO) 2·4H 2O as precursor.The effect of BaO on thermal stability of Al 2O 3 was characterized by XRD(X ray diffraction) and TPR (temperature programmed reduction) analyses.The catalytic activity of MnO x /BaO Al 2O 3 in combustion of methane was studied.The results showed MnO x supported by BaO Al 2O 3 had obviously better activity than MnO x /Al 2O 3,and the optimal mass fraction of Ba in Al 2O 3 was 5%.

关 键 词：MnOx/BaO-Al2O3 X-射线衍射 程序升温还原 甲烷 燃烧 催化活性 

分 类 号：O643.361[理学—物理化学] O623.11[理学—化学]