The production of 5-hydroxymethylfurfural (HMF) from cellulose is of great significance for the high-value utilization of biomass, although this route currently faces the challenge of low efficiency. In the present work, a series of effective (x)Hf/ZSM-5 catalysts were developed for HMF production from cellulose, and analyzed by BET, XRD, SEM, ICP, NH3-TPD, Py-FTIR techniques. Driven by the (5)Hf/ZSM-5 catalyst, HMF with a yield of up to 67.5% and 17.2% of furfural are simultaneously obtained from cellulose in the H2O(NaCl)/THF biphasic system. Moreover, after four consecutive cycles, (5)Hf/ZSM-5 catalyst still maintained part of its catalytic activity. The 67.5% HMF yield achieved herein is one of the highest yields achieved in the conversion reaction using cellulose as a substrate, and the catalytic performance of the H2O(NaCl)/THF system containing the (5)Hf/ZSM-5 catalyst is even comparable to that of the expensive ionic liquid system. This result reflects the application prospect of (5)Hf/ZSM-5 catalyst in the future industrial production process of HMF.

中文翻译：

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一种有效且廉价的 Hf/ZSM-5 催化剂，用于从纤维素高效形成 HMF

以纤维素为原料生产 5-羟甲基糠醛 (HMF) 对生物质的高价值利用具有重要意义，但该路线目前面临着效率低下的挑战。在目前的工作中，开发了一系列有效的 (x)Hf/ZSM-5 催化剂用于从纤维素生产 HMF，并通过 BET、XRD、SEM、ICP、NH3-TPD、Py-FTIR 技术进行分析。在 (5)Hf/ZSM-5 催化剂的驱动下，在 H2O(NaCl)/THF 双相体系中从纤维素中同时获得了产率高达 67.5% 和 17.2% 糠醛的 HMF。此外，连续四次循环后，(5)Hf/ZSM-5催化剂仍保持部分催化活性。本文实现的 67.5% HMF 产率是在使用纤维素作为底物的转化反应中实现的最高产率之一，含有 (5)Hf/ZSM-5 催化剂的 H2O(NaCl)/THF 体系的催化性能甚至可与昂贵的离子液体体系相媲美。这一结果反映了(5)Hf/ZSM-5催化剂在未来HMF工业化生产过程中的应用前景。