催化学报 ›› 2026, Vol. 88: 506-515.DOI: 10.1016/S1872-2067(26)65085-1

• 论文 • 上一篇    下一篇

ZSM-23沸石纳米片的合成探究

刘培a,1, 刘晓娜b,1, 张磊c, 翟羿a, 童颜d, 骆剑锋a, 吴勤明a,e,*(), 陈伟f,*(), 杜晓辉g, 刘小龙d, 刘中民b,*(), 肖丰收a,e,*()   

  1. a 浙江大学化学工程与生物工程学院, 浙江杭州 310028, 中国
    b 中国科学院大连化学物理研究所, 国家低碳催化技术工程研究中心, 辽宁大连 116023, 中国
    c 常州大学石油化工学院, 先进催化与绿色制造协同创新中心, 江苏省先进催化材料与技术重点实验室, 江苏常州 213164, 中国
    d 中山大学材料学院, 广东广州 510275, 中国
    e 怀柔实验室山西研究院, 山西太原030032, 中国
    f 根特大学分子模拟中心, 东弗兰德省, 比利时
    g 中国石油天然气股份有限公司石油化工研究院兰州化工研究中心, 甘肃兰州 730060, 中国
  • 收稿日期:2025-12-08 接受日期:2026-01-31 出版日期:2026-09-18 发布日期:2026-09-05
  • 通讯作者: *电子信箱: qinmingwu@zju.edu.cn (吴勤明),
    Wei.Chen@UGent.be (陈伟),
    zml@dicp.ac.cn (刘中民),
    fsxiao@zju.edu.cn (肖丰收).
  • 基金资助:
    国家重点研发计划(2022YFA1503602);国家自然科学基金(22522208);国家自然科学基金(22288101);国家自然科学基金(22402176);浙江省自然科学基金(LR24B030001);中央高校基本科研业务费专项资金(226-2025-00116);中国石油科技重点研究项目(2023ZZ36)

Insights into synthesis of ZSM-23 zeolite nanosheets

Pei Liua,1, Xiaona Liub,1, Lei Zhangc, Yi Zhaia, Yan Tongd, Jianfeng Luoa, Qinming Wua,e,*(), Wei Chenf,*(), Xiaohui Dug, Xiaolong Liud, Zhongmin Liub,*(), Feng-Shou Xiaoa,e,*()   

  1. a College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310028, Zhejiang, China
    b National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
    c Collaborative Innovation Center of Advanced Catalysis and Green Manufacturing, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, Jiangsu, China
    d School of Materials, Sun Yat-Sen University, Guangzhou 510275, Guangdong, China
    e Shanxi Research Institute, Huairou Research Laboratory, Taiyuan 030032, Shanxi, China
    f Center for Molecular Modeling, Ghent University, Technologiepark 46, 9052 Zwijnaarde, Belgium
    g Lanzhou Petrochemical Research Center, Petrochemical Research Institute, PetroChina, Lanzhou 730060, Gansu, China
  • Received:2025-12-08 Accepted:2026-01-31 Online:2026-09-18 Published:2026-09-05
  • About author:First author contact: 共同第一作者.
    Contributed to this work equally.
  • Supported by:
    National Key Research and Development Program of China(2022YFA1503602);The National Natural Science Foundation of China(22522208);The National Natural Science Foundation of China(22288101);The National Natural Science Foundation of China(22402176);The Zhejiang Provincial Natural Science Foundation of China(LR24B030001);The Fundamental Research Funds for the Central Universities(226-2025-00116);The PetroChina Science and Technology Major Program(2023ZZ36)

摘要:

一维沸石分子筛(如ZSM-23)通常呈现微米级长度的针状形貌, 这种形貌不仅会显著影响催化性能, 也存在潜在的职业健康风险. 本文首次报道了利用一种新型Gemini型季铵盐(Bis-Benz-Pyr2+)作为有机模板, 成功合成了厚度仅约10 nm的ZSM-23沸石纳米片; 该模板剂不仅能够导向ZSM-23沸石微孔结构的形成, 并促进纳米片沿a轴和b轴方向生长. 表征结果表明, 所制备的ZSM-23沸石纳米片具有高结晶度、典型的纳米片形貌、较大的外表面积以及完全四配位骨架铝物种. 更重要的是, 在正十六烷加氢异构反应中, 相较于以N,N-二甲基甲酰胺为模板合成的常规ZSM-23沸石, ZSM-23沸石纳米片展现出更高的正十六烷转化率和异十六烷产率. 这些研究结果为后续开发高效沸石催化剂奠定了坚实基础.
X-射线衍射结果证实, 该纳米片具有较高结晶度. 高倍透射电镜结果显示, 沿[001]方向观察, ZSM-23晶体优先沿ab平面生长; 沿[210]方向观察, 其沿[001]方向的厚度约为10 nm. 进一步对纳米片尺寸进行统计分析, 显示其沿a轴、b轴和c轴的尺寸分别为500, 250, 和9 nm. 27Al核磁证实铝物种均为骨架铝; 13C核磁表明多数模板剂完整存在于ZSM-23沸石结构中. Ar与N2吸附结果表明, ZSM-23沸石纳米片具有较大外比表面积; Ar吸附孔径分布图显示其存在32‒80 nm的孔径. 理论模拟表明, Bis-Benz-Pyr2+的稳定化能为‒8.73 kJ/(mol·Si), 远低于吡咯烷的‒1.05 kJ/(mol·Si), 证实其是ZSM-23沸石的优良模板剂. 晶面形成能分析显示: 当引入Bis-Benz-Pyr2+后, [001]晶面形成能较[010]和[100]更负, 说明沿a, b轴形成纳米片形貌具有热力学优势, 进一步证实该模板剂对ZSM-23沸石纳米片形貌的形成具有关键导向作用. 晶化过程跟踪显示, 随晶化时间延长, ZSM-23沸石纳米片仅沿ab平面扩展, 厚度基本不变, 这一生长特性与理论计算高度一致. 将该纳米片用于正十六烷加氢异构反应, 相较于常规棒状ZSM-23沸石, 其展现出更高的正十六烷转化率和异十六烷收率.
综上, 新型模板剂实现了ZSM-23沸石纳米片的精准合成, 其独特形貌赋予优异催化性能, 为高效沸石催化剂设计提供新思路.

关键词: ZSM-23沸石分子筛, 纳米片, 有机模板, 加氢异构

Abstract:

Precise control of crystal growth allows for zeolites with tailored morphology, and one of the typical zeolite families is one-dimensional zeolites such as ZSM-23, which normally displays a needle-like morphology with micron-level length. This morphology not only strongly influences catalytic performances but also has potentially healthy issue. Herein, we for the first time show a successful synthesis of ZSM-23 zeolite nanosheets with a thickness of only about 10 nm from a novel gemini-type quaternary ammonium as an organic template. Characterizations of the samples demonstrate that ZSM-23 zeolite nanosheets along a and b axes have high crystallinity, large external surface area, and fully four-coordinated aluminum species. Very importantly, ZSM-23 zeolite nanosheets exhibit higher n-hexadecane (C16) conversion and iso-C16 yield in n-C16 hydroisomerization than those of conventional ZSM-23 zeolite synthesized from N,N-dimethylformamide. These findings offer a favorable opportunity for the subsequent development of efficient zeolite catalysts in the future.

Key words: ZSM-23 zeolite, Nanosheets, Organic template, Hydroisomerization