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<p>Fe-doped CuCrO<sub>2</sub> catalyst CuCr<sub>1−<i>x</i></sub>Fe<sub><i>x</i></sub>O<sub>2</sub> series were prepared by the sol-gel method with different Fe contents. The structure and properties of the catalysts were investigated by XRD(X-ray diffraction), SEM(scanning electron microscope), and XPS(X-ray photoelectron spectroscopy) and the purification effect on NO<sub><i>x</i></sub> and PM was measured through simulated emission experiments. The results indicate that CuCrO<sub>2</sub> catalyst has good catalytic activity, the maximum NO<sub><i>x</i></sub> conversion rate can be up to 28.15%, and the ignition temperature of PM can be reduced to 285 °C. When the molecular ratio of Cr: Fe=9:1, the catalyst can achieve better catalytic effect, the maximum NO<sub><i>x</i></sub> conversion rate will be up to 30.25% and the PM ignition temperature can be reduced to 280 °C. In addition, the catalytic activity of catalyst supported on different carriers was also studied. The results show that catalyst on SiC foam ceramic carrier has better catalytic activity than that on cordierite honeycomb ceramic carrier. The maximum NO<sub><i>x</i></sub> conversion of CuCrO<sub>2</sub> and CuCr<sub>0.9</sub>Fe<sub>0.1</sub>O<sub>2</sub> can be increased by 0.72% and 1.33% respectively, and the PM ignition temperature can be further reduced by 15 and 5°C respectively.</p>

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Catalytic Purification of NOx and PM by Fe-Doped CuCrO2 Catalyst Using Two Kinds of Carriers

  • 期刊论文

  • 发表日期：

    2025年5月17日

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  • Fangzhou Lu,
  • Wei Wang,
  • Mengxiao Wang

摘要

Fe-doped CuCrO2 catalyst CuCr1−xFexO2 series were prepared by the sol-gel method with different Fe contents. The structure and properties of the catalysts were investigated by XRD(X-ray diffraction), SEM(scanning electron microscope), and XPS(X-ray photoelectron spectroscopy) and the purification effect on NOx and PM was measured through simulated emission experiments. The results indicate that CuCrO2 catalyst has good catalytic activity, the maximum NOx conversion rate can be up to 28.15%, and the ignition temperature of PM can be reduced to 285 °C. When the molecular ratio of Cr: Fe=9:1, the catalyst can achieve better catalytic effect, the maximum NOx conversion rate will be up to 30.25% and the PM ignition temperature can be reduced to 280 °C. In addition, the catalytic activity of catalyst supported on different carriers was also studied. The results show that catalyst on SiC foam ceramic carrier has better catalytic activity than that on cordierite honeycomb ceramic carrier. The maximum NOx conversion of CuCrO2 and CuCr0.9Fe0.1O2 can be increased by 0.72% and 1.33% respectively, and the PM ignition temperature can be further reduced by 15 and 5°C respectively.