Scholarlink

<p>Catalytic transfer hydrogenation (CTH) of furfural to furfuryl alcohol is a pivotal strategy for valorizing biomass-derived platform molecules. Herein, we report the design of a yolk-shell MOF-808@hollow mesoporous silica spheres (MOF-808@HMSS) catalyst, where MOF-808 nanocrystals are uniformly confined within the internal cavities of HMSS. Compared to pure MOF-808, the spatial confinement effect imposed by HMSS induces the formation of smaller MOF-808 nanocrystals, increasing the density of accessible active sites. The mechanically robust HMSS shell significantly enhances the structural integrity of the catalyst by mitigating mechanical attrition and suppressing leaching of active components during reaction. Notably, the unique yolk-shell architecture creates a confined nanoscale microenvironment that promotes efficient adsorption and activation of reactants at catalytic centers. Consequently, MOF-808@HMSS exhibits markedly superior performance in CTH of furfural as well as higher reusability and cycling stability compared to pure MOF-808. Detailed characterization reveals abundant Lewis acid sites with a minor proportion of basic sites in MOF-808@HMSS. Selective poisoning experiments confirm that Lewis acid sites play a predominant role in the Meerwein-Ponndorf-Verley reaction, while synergistic interplay between acidic and basic sites enhances reactant adsorption and facilitates <i>i</i>-propanol deprotonation, collectively accelerating the overall CTH process.</p> Graphical Abstract <p></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

Confined Growth of MOF-808 in Hollow Mesoporous Silica Spheres Enables Efficient Catalytic Transfer Hydrogenation of Furfural

  • 期刊论文

  • 发表日期：

    2026年5月9日

查看全文
  • Xiao Ma,
  • Guangxing Wang,
  • Ting Xu,
  • Lu Feng,
  • Rundong Zhou,
  • Cuiqin Li,
  • Feng Li

摘要

Catalytic transfer hydrogenation (CTH) of furfural to furfuryl alcohol is a pivotal strategy for valorizing biomass-derived platform molecules. Herein, we report the design of a yolk-shell MOF-808@hollow mesoporous silica spheres (MOF-808@HMSS) catalyst, where MOF-808 nanocrystals are uniformly confined within the internal cavities of HMSS. Compared to pure MOF-808, the spatial confinement effect imposed by HMSS induces the formation of smaller MOF-808 nanocrystals, increasing the density of accessible active sites. The mechanically robust HMSS shell significantly enhances the structural integrity of the catalyst by mitigating mechanical attrition and suppressing leaching of active components during reaction. Notably, the unique yolk-shell architecture creates a confined nanoscale microenvironment that promotes efficient adsorption and activation of reactants at catalytic centers. Consequently, MOF-808@HMSS exhibits markedly superior performance in CTH of furfural as well as higher reusability and cycling stability compared to pure MOF-808. Detailed characterization reveals abundant Lewis acid sites with a minor proportion of basic sites in MOF-808@HMSS. Selective poisoning experiments confirm that Lewis acid sites play a predominant role in the Meerwein-Ponndorf-Verley reaction, while synergistic interplay between acidic and basic sites enhances reactant adsorption and facilitates i-propanol deprotonation, collectively accelerating the overall CTH process.

Graphical Abstract