Scholarlink

<p>γ-Valerolactone (GVL) is a key biomass-derived platform molecule with versatile applications in sustainable fuels and green solvents. In this study, a series of Zr(OH)<sub>4</sub> catalysts were prepared via pH-controlled precipitation and tested in the catalytic transfer hydrogenation of methyl levulinate (ML) using isopropanol (IPA) as a hydrogen donor. The catalyst prepared at pH = 4 exhibited the highest GVL yield (99.3%) and selectivity (97.6%) under relatively mild reaction conditions (180 °C, 4 h). Spectroscopic and structural analyses revealed that the superior catalytic performance can be attributed to the presence of a partially crystallized tetragonal phase and a high density of Lewis acid sites (~ 248 μmol·g<sup>−1</sup>). Furthermore, it could also be recovered easily and used repeatedly at least 8 times without an obvious decrease in activity. Mechanistic studies support that the reaction proceeds via a Meerwein–Ponndorf–Verley (MPV) pathway involving a six-membered ring transition state. This work highlights the potential of non-noble metal Zr-based hydroxides as efficient and scalable catalysts for biomass valorization.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Highly efficient transfer hydrogenation of methyl levulinate over pH-tuned Zr(OH)4 catalysts

  • 期刊论文

  • 发表日期：

    2026年3月18日

查看全文
  • Wenwei Hu,
  • Yuman Li,
  • Xuanyan Liu,
  • Yuanyuan She,
  • Xiantao Tan,
  • Tianyu Sun,
  • Jing Zhang,
  • Dabo Jiang,
  • Jiao Zhou,
  • Qiangbin Yang

摘要

γ-Valerolactone (GVL) is a key biomass-derived platform molecule with versatile applications in sustainable fuels and green solvents. In this study, a series of Zr(OH)4 catalysts were prepared via pH-controlled precipitation and tested in the catalytic transfer hydrogenation of methyl levulinate (ML) using isopropanol (IPA) as a hydrogen donor. The catalyst prepared at pH = 4 exhibited the highest GVL yield (99.3%) and selectivity (97.6%) under relatively mild reaction conditions (180 °C, 4 h). Spectroscopic and structural analyses revealed that the superior catalytic performance can be attributed to the presence of a partially crystallized tetragonal phase and a high density of Lewis acid sites (~ 248 μmol·g−1). Furthermore, it could also be recovered easily and used repeatedly at least 8 times without an obvious decrease in activity. Mechanistic studies support that the reaction proceeds via a Meerwein–Ponndorf–Verley (MPV) pathway involving a six-membered ring transition state. This work highlights the potential of non-noble metal Zr-based hydroxides as efficient and scalable catalysts for biomass valorization.