酸性质和b轴长度对H-ZSM-5纳米片上葡萄糖转化的影响

doi:10.1016/j.actphy.2026.100436

物理化学学报

酸性质和b轴长度对H-ZSM-5纳米片上葡萄糖转化的影响

姜亚菲, 徐世兴, 马庆泽, 张嘉轩, 王伟硕, 杨延钊, 田昊

山东大学化学与化工学院, 特种功能聚集体材料教育部重点实验室, 山东济南 250100

收稿日期:2026-07-21 修回日期:2026-09-11 录用日期:2026-09-14
通讯作者: 田昊 E-mail:hao_tian@sdu.edu.cn
基金资助:
本工作得到国家自然科学基金(22478224)、山东省自然科学基金(ZR2024QB278)和山东省高等学校青年创新团队计划(2024KJH171)的资助。

Effect of acidic properties and b-axis length on glucose conversion over H-ZSM-5 nanosheets

Yafei Jiang, Shixing Xu, Qingze Ma, Jiaxuan Zhang, Weishuo Wang, Yanzhao Yang, Hao Tian

Key Laboratory for Special Functional Aggregate Materials of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, Shandong Province, China

Received:2026-07-21 Revised:2026-09-11 Accepted:2026-09-14
Contact: Hao Tian E-mail:hao_tian@sdu.edu.cn

1. 2026.100436-ACTPHY-D-26-00526-4p-2# SI.pdf(668KB)

摘要/Abstract

摘要： 将葡萄糖转化为高附加值产品是碳资源利用的一条有前景的路线，这一过程受到固体酸催化剂的酸性性质和传质特性的强烈影响。在本研究中，合成了具有不同Si/Al比的H-ZSM-5纳米片，以研究骨架组成和b轴长度对葡萄糖转化的影响。研究结果表明，Si/Al比的提高尽管降低了酸位点密度，但同时缩短了b轴长度，使铝物种在外表面附近富集，并增加了Lewis酸位点的相对含量，从而增强了催化活性位点的可及性和利用率。因此，H-ZSM-5_100表现出最高的位点时间产率、最低的表观活化能以及对果糖和5-羟甲基糠醛(5-HMF)的最高选择性。在优化反应条件下，H-ZSM-5_100实现了56.3%的葡萄糖转化率，5-HMF生成速率为42.8 mmol h^-1 g^-1。这些结果表明，H-ZSM-5纳米片的催化性能受骨架组成、酸位点分布和晶体形貌的协同效应控制，上述结果为生物质转化用沸石催化剂的合理设计提供了指导。

关键词: H-ZSM-5纳米片, 葡萄糖转化, 硅铝比, 位点可及性, 5-羟甲基糠醛

Abstract: Converting glucose into value-added products is a promising route for carbon utilization, and strongly influenced by the acidic properties and mass transport characteristics of solid acid catalysts. In this study, H-ZSM-5 nanosheets with varied Si/Al ratios were synthesized to investigate the effects of framework composition and b-axis length on glucose conversion. Increasing the Si/Al ratio decreased the density of acid sites but simultaneously reduced the b-axis length, enriched aluminum species near the external surface, and increased the relative abundance of Lewis acid sites, thereby enhancing the accessibility and utilization of active site. Consequently, H-ZSM-5_100 exhibited the highest site time yield, the lowest apparent activation energy, and the highest selectivity toward fructose and 5-hydroxymethylfurfural (5-HMF). Under optimized reaction conditions, H-ZSM-5_100 achieved a glucose conversion of 56.3% with a 5-HMF formation rate of 42.8 mmol h^-1 g^-1. These results demonstrate that the catalytic performance of H-ZSM-5 nanosheets is governed by the synergistic effects of framework composition, the distribution of acid site, and crystal morphology, providing guidance for the rational design of zeolite catalysts for biomass conversion.

Key words: H-ZSM-5 nanosheets, Glucose conversion, Si/Al ratio, Site accessibility, 5-Hydroxymethylfurfural

姜亚菲, 徐世兴, 马庆泽, 张嘉轩, 王伟硕, 杨延钊, 田昊. 酸性质和b轴长度对H-ZSM-5纳米片上葡萄糖转化的影响[J]. 物理化学学报 2026, (), 100436. doi: 10.1016/j.actphy.2026.100436

Yafei Jiang, Shixing Xu, Qingze Ma, Jiaxuan Zhang, Weishuo Wang, Yanzhao Yang, Hao Tian. Effect of acidic properties and b-axis length on glucose conversion over H-ZSM-5 nanosheets[J]. Acta Phys. -Chim. Sin. 2026, (), 100436. doi: 10.1016/j.actphy.2026.100436

链接本文: https://www.whxb.pku.edu.cn/CN/10.1016/j.actphy.2026.100436

https://www.whxb.pku.edu.cn/CN/Y2026/V/I/100436

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