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<p>This research article discussed the synthesis of bimetallic Pd-Cu/CeO<sub>2</sub> catalysts for NO removal using selective catalytic reduction (SCR) and H<sub>2</sub> as a reducing agent. The CeO<sub>2</sub> support was synthesized using both hydrothermal and precipitation methods. The catalysts were characterized through several analytical techniques, including X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) surface area analysis, scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), transmission electron microscopy (TEM), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). The catalysts consisted of 25 wt% Cu and 0.4–1.2 wt% Pd. Among the catalysts, the one supported on CeO<sub>2</sub> prepared via the hydrothermal method exhibited the highest catalytic activity for NO reduction. Incorporating Pd and Cu into the CeO<sub>2</sub> support significantly improved NO conversion and selectivity. The optimal performance was observed with the bimetallic catalyst containing 0.4 wt% Pd and 25 wt% Cu on hydrothermally synthesized CeO<sub>2</sub>, achieving a NO conversion rate of 45.64% at 250&#xa0;°C. As the Pd content increased, NO conversion and N<sub>2</sub> selectivity reached 80% and 90% for the Pd-Cu/CeO<sub>2</sub> catalyst.</p>

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Study of Bimetallic Catalysts Supported on CeO2 for NO Reduction Using Selective Catalytic Reduction with H2

  • 期刊论文

  • 发表日期：

    2025年8月8日

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  • Shyam Sunder Rao,
  • Dhanashree Jagtap,
  • Abhishek Anand,
  • Sweta Sharma

摘要

This research article discussed the synthesis of bimetallic Pd-Cu/CeO2 catalysts for NO removal using selective catalytic reduction (SCR) and H2 as a reducing agent. The CeO2 support was synthesized using both hydrothermal and precipitation methods. The catalysts were characterized through several analytical techniques, including X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) surface area analysis, scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), transmission electron microscopy (TEM), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). The catalysts consisted of 25 wt% Cu and 0.4–1.2 wt% Pd. Among the catalysts, the one supported on CeO2 prepared via the hydrothermal method exhibited the highest catalytic activity for NO reduction. Incorporating Pd and Cu into the CeO2 support significantly improved NO conversion and selectivity. The optimal performance was observed with the bimetallic catalyst containing 0.4 wt% Pd and 25 wt% Cu on hydrothermally synthesized CeO2, achieving a NO conversion rate of 45.64% at 250 °C. As the Pd content increased, NO conversion and N2 selectivity reached 80% and 90% for the Pd-Cu/CeO2 catalyst.