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<p>The waste generated from the industrial process of converting zirconium silicate to zirconium carbide, silicon carbide-silicon oxide (SCSO), was utilized as a valuable resource for preparing a methanol oxidation catalyst. The present paper covers the engineering of SCSO, along with palladium catalytic nanoparticles with further modifications. Here, there are two scenarios to prepare the catalyst: (I) The SCSO was etched with hydrofluoric acid (SCSOHF) to increase the surface area and reduce electrical resistance. The low-dimensional Pd particles were anchored on SCSO and SCSO<sub>HF</sub> via chemical deposition (Pd/SCSO and Pd/SCSO<sub>HF</sub>). (II) The reduced graphene oxide was incorporated into the catalytic mixture to enhance electron transfer (Pd/rGO/SCSO). The synthesized multi-component catalysts were then utilized for methanol oxidation. The morphology and palladium loading of the catalysts were determined through FESEM and ICP analysis, respectively. It was found that the activity of the Pd/SCSO<sub>HF</sub> catalyst with 3179.62&#xa0;mA/mg<sub>Pd</sub> surpassed that of catalysts (228.32&#xa0;mA/mgPd for Pd/SCSO and 708.90&#xa0;mA/mgPd for Pd/rGO/SCSO) for oxidation of 0.7&#xa0;M methanol. This can be attributed to the good conductivity, uniform dispersion of Pd particles, high surface area, and operational convenience offered by the SCSO<sub>HF</sub> support.</p>

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Nanoarchitectonics of SiC/SiO2 solid solution supported low-dimensional Pd catalyst for methanol oxidation

  • 期刊论文

  • 发表日期：

    2025年7月29日

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  • Hale Ganjali,
  • Zahra Yavari,
  • Fariba Kaedi,
  • Mojtaba Bagherzadeh,
  • Ahmad Reza Abbasian

摘要

The waste generated from the industrial process of converting zirconium silicate to zirconium carbide, silicon carbide-silicon oxide (SCSO), was utilized as a valuable resource for preparing a methanol oxidation catalyst. The present paper covers the engineering of SCSO, along with palladium catalytic nanoparticles with further modifications. Here, there are two scenarios to prepare the catalyst: (I) The SCSO was etched with hydrofluoric acid (SCSOHF) to increase the surface area and reduce electrical resistance. The low-dimensional Pd particles were anchored on SCSO and SCSOHF via chemical deposition (Pd/SCSO and Pd/SCSOHF). (II) The reduced graphene oxide was incorporated into the catalytic mixture to enhance electron transfer (Pd/rGO/SCSO). The synthesized multi-component catalysts were then utilized for methanol oxidation. The morphology and palladium loading of the catalysts were determined through FESEM and ICP analysis, respectively. It was found that the activity of the Pd/SCSOHF catalyst with 3179.62 mA/mgPd surpassed that of catalysts (228.32 mA/mgPd for Pd/SCSO and 708.90 mA/mgPd for Pd/rGO/SCSO) for oxidation of 0.7 M methanol. This can be attributed to the good conductivity, uniform dispersion of Pd particles, high surface area, and operational convenience offered by the SCSOHF support.