近日，北京航空航天大学梁洁团队报道了一种用于生物质催化热解的漏斗结构12×10环沸石。相关论文于2025年12月16日发表在《美国化学会志》上。

基于预置反应需求的"按需定制式"沸石合成对沸石工程至关重要。催化快速热解技术作为将生物质直接转化为即用型烃类燃料的前沿路径，亟需具有梯度大/中孔结构的沸石催化剂，但此类预设结构沸石的合成仍面临挑战。

研究组提出一种原位部分沸石转化策略，成功制备了专为生物质催化快速热解设计的核壳结构HS-ZSM-5@Beta异质沸石。原子级集成微分相位衬度扫描透射电子显微镜表征显示，该材料具有无缝衔接的核壳界面及漏斗状12×10元环通道结构。凭借其明确的"核到壳"传质路径与增强的孔道协同效应，HS-ZSM-5@Beta在玉米秸秆催化快速热解中实现了57.4%的烃类产物选择性，是传统ZSM-5催化剂的两倍，且在八次热解-再生循环后仍保持稳定的催化活性。结构-性能关系研究揭示了该合成策略的动力学优势。该工作为面向预设反应的沸石理性设计提供了重要突破。

附：英文原文

Title: A Funnel-Structured 12 × 10-Ring Zeolite Customized for Biomass Catalytic Pyrolysis

Author: Liu Wu, Xiaoge Wang, Shihao Wang, Jing Ju, Zhentao Chen, Junliang Sun, Jie Liang

Issue&Volume: December 16, 2025

Abstract: “Ab initio” synthesis of reaction-customized zeolites is essential for zeolite engineering. Catalytic fast pyrolysis (CFP) represents a promising reaction to directly convert biomass into drop-in hydrocarbon fuels, which necessitates zeolites with a gradient large-/medium-porosity. However, the synthesis of such a predefined zeolite is challenging. Herein, an in situ partial interzeolite transformation strategy is proposed to fabricate a core–shell HS-ZSM-5@Beta heterozeolite tailored for biomass CFP. HS-ZSM-5@Beta features a seamless core-to-shell interface and funnel-structured 12 × 10-membered ring (MR) channels, as revealed by atomic-level integrated differential phase contrast scanning transmission electron microscopy (iDPC-STEM). With the well-defined “core-to-shell” pathway and enhanced porosity synergy, HS-ZSM-5@Beta delivers a hydrocarbon selectivity of 57.4 area % during maize straw CFP, which is twice that of conventional ZSM-5. The robust catalytic activity is retained over eight pyrolysis-regeneration cycles. A structure–property relationship investigation underscores the kinetic advantages of this synthetic approach. This study advances the real rational design of zeolites for pre-established reactions.

DOI: 10.1021/jacs.5c17648

Source: https://pubs.acs.org/doi/abs/10.1021/jacs.5c17648