MnOx/Al2O3/Ce0.45Zr0.45M0.10Oy (M = Mn, Y, La) catalysts used for ethanol catalytic combustion |
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作者单位: | Key Laboratory of Green Chemistry & Technology,Ministry of Education,College of Chemistry,Sichuan University,Chengdu 610064,Sichuan,China
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摘 要: |
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关 键 词: | 整体式催化剂 香格里拉 MnOx 催化燃烧 掺杂锰 乙醇 催化活性 钇 |
收稿时间: | 7 November 2008 |
MnOx/Al2O3/Ce0.45Zr0.45M0.10Oy (M= Mn, Y, La) catalysts used for ethanol catalytic combustion |
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Authors: | Hongyan Cao Weicong Song Maochu Gong Jianli Wang Shenghui Yan Zhimin Liu Yaoqiang Chen |
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Institution: | Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China |
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Abstract: | MnOx/Al2O3/Ce0.45Zr0.45M0.10Oy (M = Mn,Y,La) catalysts were prepared by impregnation method and characterized by BET,TPR and XRD analyses.The catalytic activities toward ethanol combustion were investigated in a microreactor.The results demonstrated that the catalytic activity of MnOx/Al2O3/Ce0.50Zr0.50O2 monolithic catalyst could be improved by doping Mn,Y and La into Ce0.50Zr0.50O2.When doping Y into Ce0.50Zr0.50O2,the catalyst MnOx/Al2O3/Ce0.45Zr0.45Y0.10O1.95 showed the highest activity.The 100% conversion temperature of ethanol was 230 ℃.Furthermore,once the conversion of ethanol started,the complete conversion was quickly achieved.The doping of Mn,Y and La led to better activity for ethanol combustion and lower temperature reduction peaks in TPR profiles.The doping of Mn resulted in enhanced oxygen storage capacity (OSC),larger area of the reduction peaks,and excellent reactivity,and the doping of Y resulted in the lowest reduction temperature and the best activity. |
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Keywords: | MnOx ethanol ceda-zixconia solid solutions doping |
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