| 稀土氧化物对CuO-CeO2/γ-Al2O3/Cord.催化剂性能的影响 |
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| 引用本文： | 李伟,白雪,王晓燕,李嘉,谭小龙,张永林,彭春丽.稀土氧化物对CuO-CeO2/γ-Al2O3/Cord.催化剂性能的影响[J].内蒙古工业大学学报,2009,28(3):209-212. |
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| 作者姓名： | 李伟 白雪 王晓燕 李嘉 谭小龙 张永林 彭春丽 |
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| 作者单位： | 内蒙古工业大学化工学院,呼和浩特010051 |
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| 基金项目： | 内蒙自然科学基金（项目编号200607010204）; 内蒙古工业大学校基金联合资助 |
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| 摘 要： | 以拟薄水铝石为原料,HNO3为胶溶剂,采用溶胶-凝胶法制得稳定的γ-AlOOH溶胶,分别添加La、Y、Nd、Pr、Ce等稀土氧化物,对蜂窝陶瓷载体进行表面涂层,再以CuO-CeO2为活性组分制得催化剂.利用色谱流动反应法、H2-TPR以及XRD对其性能及结构进行了测试,结果表明,添加La2O3、Y2O3、Ce2O3的催化剂比不添加任何稀土氧化物的催化剂的活性好,且添加Y2O3后催化剂的选择性在175℃时仍能达到90%.
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| 关 键 词： | 氧化铝涂层 稀土 CuO-CeO2 溶胶-凝胶法 |
EFFECTS OF RARE EARTHS ON CuO-CeO2/γ-Al2O3/Cord. CATALYSTS |
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| LI Wei,BAI Xue,WANG Xiao-yan,LI Jia,TAN Xiao-long,ZHANG Yong-lin,PENG Chun-li.EFFECTS OF RARE EARTHS ON CuO-CeO2/γ-Al2O3/Cord. CATALYSTS[J].Journal of Inner Mongolia Polytechnic University(Social Sciences Edition),2009,28(3):209-212. |
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| Authors: | LI Wei BAI Xue WANG Xiao-yan LI Jia TAN Xiao-long ZHANG Yong-lin PENG Chun-li |
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| Institution: | (School of Chemical Engineering,Inner Mongolia University of Technology,Hohhot 010051,China) |
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| Abstract: | γ-Al2O3 sol is prepared by applying the sol-gel method with γ-AlOOH as the raw material and HNO3 as the dispergator.La2O3,Y2O3,Nd2O3,Pr6O11,Ce2O3 are added respectively to the sol and,correspondingly,catalysts with different additives are produced.The prepared γ-Al2O3 sol will be used as a coating modifier for the porous ceramic substrate.The active component of the catalyst is CuO-CeO2.Performance and structure of the catalyst are studied by means of H2-TPR and XRD and through the test of activity.Results show that the addition of La2O3,Y2O3,Ce2O3 can improve the activity of the catalyst,and that the addition of Y2O3 to γ-Al2O3 sol can increase the selectivity of the catalyst,which achieves 90% even when the temperature reaches 175 ℃. |
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| Keywords: | alumina coating rare earths CuO-CeO2 sol-gel |
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