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Mn-doped Ceria Solid Solutions for CO Oxidation at Lower Temperatures

Catalysis Letters, ISSN: 1572-879X, Vol: 146, Issue: 10, Page: 2105-2118
2016
  • 43
    Citations
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  • 55
    Captures
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Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    43
    • Citation Indexes
      43
  • Captures
    55

Article Description

Abstract: In this investigation, Mn-doped CeO(CM) catalysts were prepared by co-precipitation (CP), sol-gel (SG), and hydrothermal (HT) methods and characterized by XRD, ICP-OES, N adsorption–desorption, SEM, TEM-HREM, Raman, XPS, FT-IR, XPS and H-TPR techniques, and evaluated for CO oxidation activity. The CM catalyst obtained by HT method showed superior CO oxidation performance at much lower temperature (T = ~355 K). The better performance of CM-HT catalyst is ascribed to its larger surface area, higher concentration of surface adsorbed oxygen, enhanced reducibility, and more oxygen vacancy sites. Further, it was found that the CM-HT catalyst is fully recyclable for over four runs while maintaining its high activity, which suggests that it is a better catalyst for CO oxidation at lower temperatures. Graphical Abstract: [Figure not available: see fulltext.]

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