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<p>Zeolitic niobium oxide is synthesized successfully, the surface of which is modified by sulfate functionalization with sulfuric acid. The sulfonated zeolitic niobium oxides act as solid acid catalysts for conversion of glucose to 5-hydroxymethylfurfural in aqueous solution at 150&#xa0;°C for 4&#xa0;h, and 47% of glucose conversion, 35% of selectivity to 5-hydroxymethylfurfural, 16.5% of yield to 5-hydroxymethylfurfural are obtained, which is higher than the other niobium oxide-based catalysts. The reaction conditions for obtaining 5-hydroxymethylfurfural, including temperature, time, catalyst dosage, and reactant concentration, are investigated in detail. The catalyst is able to be reused for 3 times without loss of activity, which demonstrates that the catalyst is stable during the catalytic reaction.</p>

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Sulfuric acid functionalized niobium oxide based zeolitic octahedral metal oxide for glucose conversion to 5-hydroxymethylfurfural in water

  • 期刊论文

  • 发表日期：

    2025年8月7日

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  • Xizhuo Jiang,
  • Qianqian Zhu,
  • Zhenxin Zhang

摘要

Zeolitic niobium oxide is synthesized successfully, the surface of which is modified by sulfate functionalization with sulfuric acid. The sulfonated zeolitic niobium oxides act as solid acid catalysts for conversion of glucose to 5-hydroxymethylfurfural in aqueous solution at 150 °C for 4 h, and 47% of glucose conversion, 35% of selectivity to 5-hydroxymethylfurfural, 16.5% of yield to 5-hydroxymethylfurfural are obtained, which is higher than the other niobium oxide-based catalysts. The reaction conditions for obtaining 5-hydroxymethylfurfural, including temperature, time, catalyst dosage, and reactant concentration, are investigated in detail. The catalyst is able to be reused for 3 times without loss of activity, which demonstrates that the catalyst is stable during the catalytic reaction.