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Plasma-assisted surface interactions of Pt/CeO catalyst for enhanced toluene catalytic oxidation

Catalysts, ISSN: 2073-4344, Vol: 9, Issue: 1
2019
  • 41
    Citations
  • 0
    Usage
  • 38
    Captures
  • 1
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    41
    • Citation Indexes
      41
  • Captures
    38
  • Mentions
    1
    • Blog Mentions
      1
      • Blog
        1

Article Description

The performance of plasma-modified Pt/CeO for toluene catalytic oxidation was investigated. Pt/CeO nanorods were prepared by wet impregnation and were modified by thermal (PC-T), plasma (PC-P), and combined (PC-TP and PC-PT) treatments. The modified catalysts were characterized by TEM (transmission electron microscope), BET (Brunauer-Emmett-Teller), H-TPR, O-TPD, XPS, UV-Raman, and OSC tests. The significant variation of the surface morphologies and surface oxygen defects could have contributed to the modification of the Pt/CeO catalysts via the plasma treatment. It was found that plasma could promote the surface interaction between Pt and CeO, resulting in the thermal stability of the catalyst. The Pt-Ce interaction was also conducive to an increase in the number of oxygen vacancies. Furthermore, PC-PT and PC-TP showed a significant difference in oxygen vacancy concentrations and catalytic activities, which illustrated that the treatment sequence (plasma and thermal treatment) affected the performance of Pt/CeO. The PC-PT sample showed the highest catalytic activity with T at 205C. This work thus demonstrates that plasma in combined treatment sequences could assist surface interactions of catalysts for enhanced toluene catalytic oxidation.

Bibliographic Details

Chen, Bingxu; Wang, Bangfen; Sun, Yuhai; Wang, Xueqin; Fu, Mingli; Wu, Junliang; Chen, Limin; Tan, Yufei; Ye, Daiqi

MDPI AG

Chemical Engineering; Environmental Science; Chemistry

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