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<p>In this study, Cu/SiO<sub>2</sub>-PET catalyst is synthesized using recycled polyethylene terephthalate (PET) from water bottles, and its catalytic performance in hydrogen production via methanolysis of sodium borohydride (NaBH<sub>4</sub>) is researched. Cu/SiO<sub>2</sub> catalysts prepared by wet impregnation are combined with recycled PET to form a composite. The prepared catalysts are characterized by scanning electron microscopy–energy dispersive x-ray (SEM-EDX), transmission electron microscopy (TEM), x-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and N<sub>2</sub> adsorption–desorption analyses. The effects of catalyst and NaBH<sub>4</sub> amounts, methanol volume, and temperature on the methanolysis reaction are investigated, and optimum conditions are determined. Under optimum conditions, the hydrogen generation rate (HGR) with the 10% Cu/SiO<sub>2</sub>-PET catalyst reaches 35,827.20&#xa0;mL&#xa0;min<sup>−1</sup> g<sub>cat</sub><sup>−1</sup>. These results demonstrate that recycled PET-based Cu/SiO<sub>2</sub> catalysts offer significant environmental and economic potential for sustainable energy production.</p>

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Efficient Hydrogen Generation from NaBH4 Methanolysis Using Recycled PET-Based Cu/SiO2 Catalysts

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年3月28日

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  • Ceren Ates,
  • Sefika Kaya,
  • Hilal Kivrak

摘要

In this study, Cu/SiO2-PET catalyst is synthesized using recycled polyethylene terephthalate (PET) from water bottles, and its catalytic performance in hydrogen production via methanolysis of sodium borohydride (NaBH4) is researched. Cu/SiO2 catalysts prepared by wet impregnation are combined with recycled PET to form a composite. The prepared catalysts are characterized by scanning electron microscopy–energy dispersive x-ray (SEM-EDX), transmission electron microscopy (TEM), x-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and N2 adsorption–desorption analyses. The effects of catalyst and NaBH4 amounts, methanol volume, and temperature on the methanolysis reaction are investigated, and optimum conditions are determined. Under optimum conditions, the hydrogen generation rate (HGR) with the 10% Cu/SiO2-PET catalyst reaches 35,827.20 mL min−1 gcat−1. These results demonstrate that recycled PET-based Cu/SiO2 catalysts offer significant environmental and economic potential for sustainable energy production.