高等学校化学学报 ›› 2021, Vol. 42 ›› Issue (1): 117.doi: 10.7503/cjcu20200391

所属专题: 分子筛功能材料 2021年,42卷,第1期

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取向晶种法制备沸石分子筛膜研究进展

刘益, 刘毅()   

  1. 大连理工大学精细化工国家重点实验室, 化工学院, 大连 116024
  • 收稿日期:2020-06-28 出版日期:2021-01-10 发布日期:2021-01-12
  • 通讯作者: 刘毅 E-mail:diligenliu@dlut.edu.cn
  • 基金资助:
    国家自然科学基金(21176231)

Research Progress on Zeolite Layer Preparation via Oriented Seeded Growth

LIU Yi, LIU Yi()   

  1. State Key Laboratory of Fine Chemicals,School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China
  • Received:2020-06-28 Online:2021-01-10 Published:2021-01-12
  • Contact: LIU Yi E-mail:diligenliu@dlut.edu.cn
  • Supported by:
    ? Supported by the National Natural Science Foundation of China(21176231)

摘要:

近年来沸石分子筛膜因在分离、 催化、 传感和防腐等研究领域具有重要的应用价值而引起广泛关注. 其中, 具有优先取向微观结构的沸石分子筛膜由于能够显著降低客体分子在膜内的扩散路径并减少膜内的晶间界缺陷密度, 成为膜分离学科的研究重点. 本文以b-轴取向MFI沸石分子筛膜为主线, 综述了国内外制备取向沸石分子筛膜的最新研究进展; 详细介绍了取向晶种法制膜工艺, 侧重总结了MFI沸石纳米片合成、 b-轴取向沸石晶种单层制备以及二次生长调控等方面的研究成果; 在深入探讨各类取向沸石分子筛膜制备策略的基础上, 分析探讨了其中存在的关键问题与解决措施, 最后对取向沸石分子筛膜的发展方向进行了展望.

关键词: 沸石, 取向, 晶种层, 膜, 分离

Abstract:

In recent decades, fabrication of zeolite layers has attracted much research interest due to their potential applications in fields of separation, catalysis, sensing, and anticorrosion. Among them, uniformly oriented zeolite layers which benefit from reduced diffusion path lengths and decreased grain boundary defects have become the focus of researchers’ attention. In this review, major achievements made in oriented zeolite layer preparation were reviewed and commented with particular emphasis on the preparation of two-dimen- sional MFI nanosheets, deposition of b-oriented MFI seed monolayers, and microstructural manipulation of b-oriented MFI layers during secondary growth. Moreover, major problems hindering their bulk production were introduced and possible solutions were proposed. Finally, further development in this research field was highlighted.

Key words: Zeolite, Orientation, Seed layer, Membrane, Separation

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