A series of magnetic, acid/base bifunctional Al–Zr@Fe₃O₄ catalysts were successfully prepared by a facile coprecipitation method and utilized in the catalytic transfer hydrogenation (CTH) of furfural to furfuryl alcohol with 2‐propanol as hydrogen source. The physicochemical properties and morphologies of the as‐prepared catalysts were characterized by various techniques, including XRD analysis, N₂ physisorption, vibrating sample magnetometry, thermal gravimetry analysis, X‐ray fluorescence spectroscopy, NH₃/CO₂ temperature‐programmed desorption, SEM, and TEM. The Al₇Zr₃@Fe₃O₄(1/1) catalyst with a Al³⁺/Zr⁴⁺/Fe₃O₄ molar ratio of 21:9:3 was found to exhibit a high furfuryl alcohol yield of 90.5 % in the CTH from furfural at 180 °C after 4 h with a comparatively low activation energy of 45.3 kJ mol⁻¹, as calculated from the Arrhenius equation. Moreover, leaching and recyclability tests confirmed Al₇Zr₃@Fe₃O₄(1/1) to function as a heterogeneous catalyst that could be reused for at least five consecutive reaction runs without significant loss of catalytic activity after simple recovery by an external magnet. Notably, the catalyst proved also efficient for hydrogenation of other biomass‐derived furanic aldehydes.

中文翻译：

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可回收的Al-Zr @ Fe混合氧化物催化糠醛催化转移加氢制糠醇

通过一种简便的共沉淀方法成功制备了一系列磁性，酸/碱双功能的Al-Zr @ Fe ₃ O ₄催化剂，并以2-丙醇为氢源将其用于糠醛到糠醇的催化转移加氢（CTH）。通过各种技术表征所制备催化剂的物理化学性质和形态，包括XRD分析，N ₂物理吸附，振动样品磁力分析，热重分析，X射线荧光光谱法，NH ₃ / CO _2程序升温脱附，SEM和TEM。具有Al的Al ₇ Zr ₃ @Fe ₃ O ₄（1/1）催化剂^发现3+ / Zr ⁴⁺ / Fe ₃ O ₄摩尔比为21：9：3时，在4 h后180°C的糠醛中，CTH中糠醛的糠醇收率为90.5％，活化能为由Arrhenius方程式计算得到45.3 kJ mol ^-1。此外，浸出和可回收性测试证实，Al ₇ Zr ₃ @Fe ₃ O ₄（1/1）可作为非均相催化剂使用，可在至少五个连续的反应过程中重复使用，而在通过外部简单回收后不会显着降低催化活性磁铁。值得一提的是，该催化剂对其他生物质衍生的呋喃醛的加氢也很有效。