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Influence of the structure of TiO2, CeO2, and CeO2-TiO2 supports on the activity of Ru catalysts in the catalytic wet air oxidation of acetic acid

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Abstract

Ru catalysts, supported on TiO2, CeO2, and CeO2-TiO2, were prepared by the impregnation method. The effect of the structure of the supports on the activity of Ru catalysts was investigated in the catalytic wet air oxidation (CWAO) of acetic acid under 230°C and 5 MPa in a batch reactor. Physical properties including the surface area, crystalline phase, and surface components of the Ru catalysts were characterized by N2 adsorption, X-ray powder diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The CeO2-based Ru catalysts had good activity, and the prepared RuO2/CeO2 catalyst showed markedly higher activity than the RuO2/CeO2-TiO2 catalyst. The surface structure, the high amount of chemisorbed oxygen on the catalyst surface, and the suitable pHpzc value of the supports played an important role in the activity of the Ru catalysts in CWAO of acetic acid.

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Authors and Affiliations

  1. National Engineering Laboratory for Biomass Power Generation Equipment, School of Renewable Energy, North China Electric Power University, Beijing, 102206, China

    Shaoxia Yang & Xingang Wang

  2. Department of Environmental Science and Engineering, Tsinghua University, Beijing, 100084, China

    Shaoxia Yang & Wanpeng Zhu

Authors
  1. Shaoxia Yang
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  2. Wanpeng Zhu
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  3. Xingang Wang
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Correspondence to Shaoxia Yang.

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Yang, S., Zhu, W. & Wang, X. Influence of the structure of TiO2, CeO2, and CeO2-TiO2 supports on the activity of Ru catalysts in the catalytic wet air oxidation of acetic acid. Rare Metals 30, 488–495 (2011). https://doi.org/10.1007/s12598-011-0417-z

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  • DOI: https://doi.org/10.1007/s12598-011-0417-z

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