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Abstract <p>Transfer hydrogenation is an alternative route to reduce oxygenated molecules suitable for upgrading biogenic platform chemicals, such as ethyl levulinate (EL) to valuable γ-valerolactone (GVL). In this report, UiO-67(Hf) catalyst is synthesized by solvothermal method to initiate transfer hydrogenation of EL. X-ray diffraction (XRD), transmission electron microscopy (TEM), and selected area X-ray diffraction (SAED) strongly confirm the amorphous nature of the framework. Infrared (IR) spectroscopy evidences the development of deprotonated COO<sup>−</sup> species suggesting coordinative bonding between [Hf<sub>6</sub>O<sub>4</sub>(OH)<sub>4</sub>]<sup>12</sup>⁺ oxo-cluster and benzene 1,4- dicarboxylate (BDC<sup>2−</sup>) as organic linkers. Thermal gravimetry analysis exhibits that the resulting material may retain its framework structure up to 500&#xa0;°C. Isothermal N<sub>2</sub> sorption discloses the mixture of micro- and meso-structures. UiO-67(Hf) is highly active to facilitate transfer hydrogenation of EL. Under optimized conditions, UiO-67(Hf) can convert &gt; 99% EL alongside 96% GVL yield. Despite slightly reduced conversion and yield after the first cycle, catalytic performances of UiO-67(Hf) for the 2nd and 3rd cycles are comparable implying its stability over multiple reaction cycles.</p> Graphical abstract <p></p>

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UiO-67(Hf) metal–organic framework as an efficient catalyst for the transfer hydrogenation of ethyl levulinate to γ-valerolactone

  • 期刊论文

  • 发表日期：

    2026年4月10日

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  • Wirawan Ciptonugroho,
  • Dika Febrianti Anggraini,
  • Vito Bintang Saputra,
  • Fauziyah Azhari,
  • Ubed S. F. Arrozi,
  • Yudha P. Budiman,
  • Hwei Voon Lee,
  • Witri Wahyu Lestari

摘要

Abstract

Transfer hydrogenation is an alternative route to reduce oxygenated molecules suitable for upgrading biogenic platform chemicals, such as ethyl levulinate (EL) to valuable γ-valerolactone (GVL). In this report, UiO-67(Hf) catalyst is synthesized by solvothermal method to initiate transfer hydrogenation of EL. X-ray diffraction (XRD), transmission electron microscopy (TEM), and selected area X-ray diffraction (SAED) strongly confirm the amorphous nature of the framework. Infrared (IR) spectroscopy evidences the development of deprotonated COO− species suggesting coordinative bonding between [Hf6O4(OH)4]12⁺ oxo-cluster and benzene 1,4- dicarboxylate (BDC2−) as organic linkers. Thermal gravimetry analysis exhibits that the resulting material may retain its framework structure up to 500 °C. Isothermal N2 sorption discloses the mixture of micro- and meso-structures. UiO-67(Hf) is highly active to facilitate transfer hydrogenation of EL. Under optimized conditions, UiO-67(Hf) can convert > 99% EL alongside 96% GVL yield. Despite slightly reduced conversion and yield after the first cycle, catalytic performances of UiO-67(Hf) for the 2nd and 3rd cycles are comparable implying its stability over multiple reaction cycles.

Graphical abstract