Magnetic acidic TiO2 catalyst for the dehydration of fructose and glucose to 5-HMF under deep eutectic solvents

IF 3.2 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of the Indian Chemical Society Pub Date : 2025-07-20 DOI:10.1016/j.jics.2025.101956

Imran Hasan, Fahad A. Alharthi

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Abstract

This study investigates a sulfonic acid-functionalized γ-Fe₂O₃@TiO₂ catalyst for the hydrothermal dehydration of carbohydrates to 5-hydroxymethylfurfural (5-HMF). The catalyst was thoroughly characterized using a range of analytical techniques, including Fourier Transform Infrared Spectroscopy (FT-IR), X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM), Brunauer–Emmett–Teller (BET) surface area analysis, Vibrating Sample Magnetometry (VSM), Field Emission Scanning Electron Microscopy (FESEM), Energy Dispersive X-ray Spectroscopy (EDX), and acidity measurements. Reaction condition optimization using deep eutectic solvents (DESs) showed that the catalyst efficiently converts 0.75 M fructose and glucose into 5-HMF with yields of up to 98 % and 96 %, respectively, at 60 °C. The catalyst's performance is attributed to a balance between surface acidity and mesoporous structure, which governs active site accessibility and selectivity. This study underscores the potential of sulfonated titania-based materials as efficient and reusable catalysts for green biomass valorization, thereby supporting the sustainable production of bio-based platform chemicals.

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磁性酸性TiO2催化剂在深度共晶溶剂下将果糖和葡萄糖脱水为5-羟甲基糠醛

研究了一种磺酸功能化γ-Fe2O3@TiO2催化剂，用于水热脱水碳水化合物制备5-羟甲基糠醛（5-HMF）。采用傅立叶变换红外光谱（FT-IR）、x射线衍射（XRD）、透射电子显微镜（TEM）、布鲁诺尔-埃米特-泰勒（BET）表面积分析、振动样品磁强计（VSM）、场发射扫描电子显微镜（FESEM）、能量色散x射线光谱（EDX）和酸度测量等一系列分析技术对催化剂进行了全面表征。采用深度共晶溶剂（DESs）对反应条件进行优化，结果表明，在60℃条件下，该催化剂能有效地将0.75 M果糖和葡萄糖转化为5-羟甲基糠醛，产率分别高达98%和96%。催化剂的性能归因于表面酸度和介孔结构之间的平衡，这决定了活性位点的可及性和选择性。这项研究强调了磺化钛基材料作为绿色生物质增值的高效和可重复使用催化剂的潜力，从而支持生物基平台化学品的可持续生产。

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来源期刊

Journal of the Indian Chemical Society 化学-化学综合

CiteScore

3.50

自引率

7.70%

发文量

492

审稿时长

3-8 weeks

期刊介绍： The Journal of the Indian Chemical Society publishes original, fundamental, theorical, experimental research work of highest quality in all areas of chemistry, biochemistry, medicinal chemistry, electrochemistry, agrochemistry, chemical engineering and technology, food chemistry, environmental chemistry, etc.