波谱学杂志2026，Vol.43Issue(2)：136-145,10.DOI:10.11938/cjmr20263207
氟化铵刻蚀对ZSM-5分子筛结构及酸性的调控机制
Influence Mechanism of NH4F Etching on the Structure and Acidity of ZSM-5 Zeolite
摘要
Abstract
Ammonium fluoride(NH4F)etching is an effective method for constructing hierarchical zeolites,yet its precise impact on the detailed structure and acidity remains unclear.This study employs probe molecule-assisted solid-state NMR technique to systematically investigate the evolution of acid site structures and properties during NH4F etching of ZSM-5 zeolites.The results reveal that the degree of NH₄F etching significantly manipulates the amount,strength,type,and spatial accessibility of acid sites,and it is also directly associated with the development of hierarchical pore structures.This work elucidates the influence mechanism of NH4F etching on zeolite structure and acidic property at the atomic level,providing a theoretical foundation for the rational design and optimization of efficient hierarchical zeolites.关键词
固体核磁共振/酸性/探针分子/氟化铵刻蚀/多级孔分子筛Key words
solid-state NMR/acidic property/probe molecule/NH4F etching/hierarchical zeolites分类
数理科学引用本文复制引用
王靖,肖瑶,俞鑫,易先锋,郑安民..氟化铵刻蚀对ZSM-5分子筛结构及酸性的调控机制[J].波谱学杂志,2026,43(2):136-145,10.基金项目
湖北省自然科学基金资助项目(2023AFA101,2025AFA008) （2023AFA101,2025AFA008）
武汉市自然科学基金资助项目(2024040701010058). （2024040701010058）
