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High Performance Ru-CN x /CeO 2 Catalyst for Catalytic Wet Oxidation of N-Methyldiethanolamine in Water

Author

Listed:
  • Yuantao Han

    (School of Petrochemical & Environment, Zhejiang Ocean University, Zhoushan 316022, China)

  • Yuchuan Ye

    (School of Petrochemical & Environment, Zhejiang Ocean University, Zhoushan 316022, China)

  • Wanjin Yu

    (State Key Lab Fluorinated Greenhouse Gases Replacement Control and Treatment, Zhejiang Research Institute of Chemical Industry, Hangzhou 310023, China)

  • Shaohong Zang

    (National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China)

  • Lili Ji

    (National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China)

  • Shijie Li

    (National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China)

  • Liuye Mo

    (School of Petrochemical & Environment, Zhejiang Ocean University, Zhoushan 316022, China)

Abstract

The synthesis of high performance catalysts for the catalytic wet oxidation (CWO) of N-methyldiethanolamine (MDEA) in water remains a challenge, and is a topic of considerable importance in relation to sustainability. In this paper, a Ru-CN x /CeO 2 catalyst was synthesized through a modified impregnation process for the CWO of MDEA, exhibiting a high activity of 80% COD removal at 180 °C and 2.5 MPa. EPR, Raman, and XPS characterizations revealed that the CN x species facilitated the reduction in Ru 4+ to Ru 0 species and enhanced the Ru–Ce interaction to form a high-density Ru-O-Ce structure with Ce 3+ sites, which strongly correlate to the generation of oxygen vacancies. The oxygen vacancies enabled the adsorption and activation of the oxygen, generating active species (h + , ·O 2 − , and ·OH) that effectively oxidized the MDEA during the catalytic reaction.

Suggested Citation

  • Yuantao Han & Yuchuan Ye & Wanjin Yu & Shaohong Zang & Lili Ji & Shijie Li & Liuye Mo, 2025. "High Performance Ru-CN x /CeO 2 Catalyst for Catalytic Wet Oxidation of N-Methyldiethanolamine in Water," Sustainability, MDPI, vol. 17(10), pages 1-20, May.
    • Handle: RePEc:gam:jsusta:v:17:y:2025:i:10:p:4358-:d:1653597
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