Preparation of meso-macroporous α-alumina using carbon nanotube as the template for the mesopore and their application to the preferential oxidation of CO in H2-rich gases

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• 作者：T. Niu (1)
  L. M. Shen (1)
  Y. Liu (1)
  
• 关键词：Meso ; macroporous ; α ; alumina ; Carbon nanotube ; Ruthenium ; Preferential oxidation
• 刊名：Journal of Porous Materials
• 出版年：2013
• 出版时间：August 2013
• 年：2013
• 卷：20
• 期：4
• 页码：789-798
• 全文大小：1284KB
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• 作者单位：T. Niu (1)
  L. M. Shen (1)
  Y. Liu (1)
  
  1. Tianjin Key Laboratory of Applied Catalysis Science and Engineering, Department of Catalysis Science and Technology, School of Chemical Engineering, Tianjin University, Tianjin, 300072, China
  

文摘

Meso-macroporous α-Al2O3 was successfully prepared by using acid-treated carbon nanotube as mesoporous forming agent and polystyrene foam as the template for the macropore. A series of Ru/meso-macroporous α-Al2O3 catalysts were prepared by the incipient wetness impregnation method and applied to the preferential oxidation of CO (CO-PROX) in H2-rich gases. SEM, N2 adsorption–desorption, H2-TPR techniques and TEM were employed to characterize the catalysts. The results indicate that the specific surface area was markedly elevated by introducing the mesopores, which led to the higher dispersion of ruthenium nanoparticles on the surface of α-Al2O3. The meso-macroporous α-Al2O3 supported ruthenium showed very high activity and selectivity for CO-PROX.