Silica-supported hafinum phosphide (HfP/SiO2) was prepared and applied as an effective solid acid catalyst to drive furfural production from xylan. Various characterizations were employed to analyze the intrinsic properties of the HfP/SiO2 catalyst, and the effects of process parameters on its performance were investigated in detail. The results showed that the performance of the HfP/SiO2 catalyst was excellent, which allowed up to 85% of the furfural yield to be achieved at 180 °C for 60 min in the water(NaCl)/THF biphasic system. There was no significant decrease in the performance of the HfP/SiO2 catalyst after seven consecutive cycles. Characterization analysis of the recovered catalyst revealed that its elemental composition and total acidity were maintained, indicating the desired hydrothermal stability of the HfP/SiO2 catalyst. In addition, by-products produced during xylan conversion were identified as humins and soluble molecular fragments or polymers.

中文翻译：

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一种用于从木聚糖生产糠醛的有效且稳定的 HfP/SiO2 催化剂

制备了二氧化硅负载的磷化铪 (HfP/SiO2) 并将其用作有效的固体酸催化剂，以驱动木聚糖生产糠醛。采用各种表征来分析 HfP/SiO2 催化剂的内在性质，并详细研究了工艺参数对其性能的影响。结果表明，HfP/SiO2催化剂的性能优异，在水(NaCl)/THF双相体系中，180℃下60分钟，糠醛产率可达85%。连续七次循环后​​，HfP/SiO2 催化剂的性能没有显着下降。回收催化剂的表征分析表明其元素组成和总酸度保持不变，表明 HfP/SiO2 催化剂具有所需的水热稳定性。此外，