Ordered Crystalline Mesoporous Oxides as Catalysts for CO Oxidation

Yu Ren, Zhen Ma, Linping Qian, Sheng Dai, Heyong He, Peter George Bruce

Research output: Contribution to journalArticlepeer-review

140 Citations (Scopus)

Abstract

Crystalline mesoporous metal oxides have attracted considerable attention recently, but their catalytic applications have rarely been studied. In this work, a series of crystalline three-dimensional mesoporous metal oxides (i.e., CeO2, Co3O4, Cr2O3, CuO, Fe2O3, beta-MnO2, Mn2O3, Mn3O4, NiO, and NiCoMnO4) were prepared using the mesoporous silica KIT-6 as a hard template. These ordered mesoporous metal oxides with highly crystalline walls were characterized by PXRD, TEM, N-2 adsorption and evaluated as CO oxidation catalysts. These mesoporous materials, except for mesoporous Fe2O3, exhibit much higher catalytic activities than their bulk counterparts. In particular, mesoporous Co3O4, beta-MnO2, and NiO show appreciable CO oxidation activity below 0 A degrees C, and the catalytic activities of mesoporous beta-MnO2, and NiO are even higher than those of their nanoparticulate counterparts with large surface areas. beta-MnO2 is particularly interesting because it combines low cost and low toxicity with high activity (T (50) = 39 A degrees C).

Original languageEnglish
Pages (from-to)146-154
Number of pages9
JournalCatalysis Letters
Volume131
Issue number1-2
DOIs
Publication statusPublished - Aug 2009

Keywords

  • Mesoporous metal oxides
  • Ordered
  • CO oxidation
  • Hard template
  • Crystalline
  • CUO-CEO2 CATALYSTS
  • CO3O4
  • SILICA
  • WALLS
  • PROPERTY
  • NANORODS
  • NANOCRYSTALS
  • STRATEGY
  • CEO2
  • NIO

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