石油炼制与化工 ›› 2024, Vol. 55 ›› Issue (2): 36-42.

• 综述 • 上一篇    下一篇

分子筛骨架铝原子分布研究进展

吴一鹏1,段绘州1,任朝秀2,侯春生3,吴韬1   

  1. 1. 北京石油化工学院新材料与化工学院,恩泽生物质精细化工北京市重点实验室
    2. 首都医科大学
    3. 中国石油塔里木油田塔中采油气管理区
  • 收稿日期:2023-10-16 修回日期:2023-11-03 出版日期:2024-02-12 发布日期:2024-01-29
  • 通讯作者: 吴韬 E-mail:wutao@bipt.edu.cn
  • 基金资助:
    北京市科技新星计划

RESEARCH PROGRESS OF MOLECULAR SIEVE SKELETON ALUMINUM ATOM DISTRIBUTION


  • Received:2023-10-16 Revised:2023-11-03 Online:2024-02-12 Published:2024-01-29
  • Supported by:
    Beijing Nova Program

摘要: 分子筛由于具有大量可调变的酸性位点以及良好的择形性和水热稳定性等优点而被广泛应用于石油化工领域的酸催化反应。分子筛骨架铝原子的位置决定了其酸位点的分布,因而骨架铝原子的分布(包括所处的空腔体积、化学环境以及两个铝原子的距离)对其酸催化性能(反应路径及反应速率)影响很大。由于分子筛的合成涉及一个复杂晶化的过程,影响骨架铝原子分布的因素众多,如起始物料的种类和浓度、晶化条件、杂原子以及后处理方法等,科研人员对骨架铝原子调控方法展开了大量的研究。基于此,综述了相关研究成果,以期推动实现以功能为导向的特定铝原子分布分子筛的定向合成。

关键词: 分子筛, 骨架铝原子, 酸位点, 晶化, 定向合成

Abstract: Molecular sieves have been widely used in acid-catalyzed reactions of petrochemical industrybecause of their variable acidic sites, good shape selectivity and hydrothermal stability. The distribution of acid sites is determined bythe position of aluminum atom in the molecular sieve framework, therefore, the distribution of skeleton aluminum atoms (including the porevolume, chemical environment of skeleton aluminum location, the distance between two aluminum atoms) has a great influence on its acidcatalytic performance (reaction pathway or reaction rate). Becausethe synthesis ofmolecular sieveinvolves a complex crystallization process,there are many factors affectingthe distribution of skeleton aluminum atoms, such as the kind and concentration of starting materials, crystallization conditions, introduction of heteroatoms, and post-treatment methods, etc. Many researchers have done a lot of research on regulation ofskeletonaluminum atoms. Based on this,the related research resultswere reviewed in order to promote theoriented synthesis of specific aluminum atom-distributed molecular sieves.

Key words: molecular sieve, skeleton aluminum atom, acid site, crystallization, oriented synthesis