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<p>The bismuth terephthalate metal–organic framework (Bi(TPA).MOF) was synthesized as a methanolysis catalyst using a solvothermal method, by reacting terephthalic acid (TPA) with bismuth nitrate pentahydrate (Bi(NO<sub>3</sub>)<sub>3</sub>·5H<sub>2</sub>O) in dimethylformamide (DMF) at 383.15&#xa0;K. The structure, morphology, and composition of the resulting MOF were characterized using advanced surface analytical techniques, including X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, Raman spectroscopy, and scanning electron microscopy coupled with energy-dispersive X-ray (SEM–EDX), which confirmed successful formation of the Bi(TPA).MOF structure. The catalytic performance of Bi(TPA).MOF was then assessed in the sodium borohydride (NaBH<sub>4</sub>) methanolysis reaction, demonstrating remarkable activity. The optimization of key reaction parameters, such as catalyst loading, NaBH<sub>4</sub> concentration, methanol volume, and reaction temperature, was conducted. Notably, Bi(TPA).MOF exhibited an outstanding hydrogen generation rate (HGR) of 321,996&#xa0;mL/min·g_catalyst, with an activation energy of 39.9&#xa0;kJ/mol, calculated via the Arrhenius equation. These results significantly surpass those previously reported in the literature, positioning Bi(TPA).MOF as a promising and efficient catalyst for enhancing hydrogen production through NaBH<sub>4</sub> methanolysis.</p>

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Efficient hydrogen production via NaBH4 methanolysis enhanced by bismuth terephthalic acid metal–organic framework

  • 期刊论文

  • 发表日期：

    2025年2月2日

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  • Bassam A. Najri,
  • Hilal Kivrak,
  • Arif Kivrak

摘要

The bismuth terephthalate metal–organic framework (Bi(TPA).MOF) was synthesized as a methanolysis catalyst using a solvothermal method, by reacting terephthalic acid (TPA) with bismuth nitrate pentahydrate (Bi(NO3)3·5H2O) in dimethylformamide (DMF) at 383.15 K. The structure, morphology, and composition of the resulting MOF were characterized using advanced surface analytical techniques, including X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, Raman spectroscopy, and scanning electron microscopy coupled with energy-dispersive X-ray (SEM–EDX), which confirmed successful formation of the Bi(TPA).MOF structure. The catalytic performance of Bi(TPA).MOF was then assessed in the sodium borohydride (NaBH4) methanolysis reaction, demonstrating remarkable activity. The optimization of key reaction parameters, such as catalyst loading, NaBH4 concentration, methanol volume, and reaction temperature, was conducted. Notably, Bi(TPA).MOF exhibited an outstanding hydrogen generation rate (HGR) of 321,996 mL/min·g_catalyst, with an activation energy of 39.9 kJ/mol, calculated via the Arrhenius equation. These results significantly surpass those previously reported in the literature, positioning Bi(TPA).MOF as a promising and efficient catalyst for enhancing hydrogen production through NaBH4 methanolysis.