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<p>Metal support interaction (MSI) and oxygen vacancies have a significant impact on the performance of the Ni catalyst for dry reforming of methane (DRM) reaction. In this paper, the synergistic effect between chelating agents and dielectric barrier discharge (DBD) technology was systematically investigated by adding different chelating agents and combining with DBD during the catalyst preparation process. The introduction of the chelating agents improved the dispersion of Ni species exposing more active sites to participate in the reaction. On this basis, DBD technology significantly increased the number of oxygen vacancies on the catalyst surface while further strengthening the MSI by reducing the size of Ni nanoparticles. Notably, ethylene glycol and DBD demonstrated excellent synergistic effects in promoting the activity, stability, and carbon resistance of Ni catalysts, which could be related to the relative content of NiAl<sub>2</sub>O<sub>4</sub> in catalysts. This research makes a substantial contribution to enhancing the reactivity of DRM catalyst by using chelating agents and DBD to alter the MSI and increase the number of oxygen vacancies.</p>

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Synergistic Effect of Chelating Agent and Plasma-Assisted on Metal Support Interaction and Oxygen Vacancies of Ni-La/Al2O3 Catalysts for Dry Reforming of Methane

  • 期刊论文

  • 发表日期：

    2025年6月24日

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  • Chao Hu,
  • Xiaoyao Zhang,
  • Xingyue Ge,
  • Qi Liu,
  • Yan Song,
  • Pengcheng Dai,
  • Xiaokang Wan,
  • Zelong Zhang

摘要

Metal support interaction (MSI) and oxygen vacancies have a significant impact on the performance of the Ni catalyst for dry reforming of methane (DRM) reaction. In this paper, the synergistic effect between chelating agents and dielectric barrier discharge (DBD) technology was systematically investigated by adding different chelating agents and combining with DBD during the catalyst preparation process. The introduction of the chelating agents improved the dispersion of Ni species exposing more active sites to participate in the reaction. On this basis, DBD technology significantly increased the number of oxygen vacancies on the catalyst surface while further strengthening the MSI by reducing the size of Ni nanoparticles. Notably, ethylene glycol and DBD demonstrated excellent synergistic effects in promoting the activity, stability, and carbon resistance of Ni catalysts, which could be related to the relative content of NiAl2O4 in catalysts. This research makes a substantial contribution to enhancing the reactivity of DRM catalyst by using chelating agents and DBD to alter the MSI and increase the number of oxygen vacancies.