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CHA型分子筛膜的研究进展

作者：李璘喆，杨建华

单位：大连理工大学精细化工国家重点实验室吸附与无机膜研究所，大连 116012

关键词：分子筛膜；菱沸石；膜分离；硅铝比

DOI号：

分类号： TQ028.8

出版年,卷(期):页码： 2022,42(2):138-145

摘要：

膜分离技术以其分离效率高、能耗低、无污染、操作条件灵活等优势吸引了研究者和工业界的极大兴趣。CHA型沸石分子筛是重要的催化剂、吸附剂，也是优异的理想分离膜材料。本文重点介绍了CHA型沸石膜在气体分离领域和有机溶剂脱水领域的最新研究进展与动态，总结了硅铝型CHA膜和磷铝型CHA膜在分离领域中各自的优势与特点，提出了制备高性能CHA 分子筛膜的关键在于对CHA分子筛膜层硅铝比的可控调节，最后对CHA膜研究的未来发展方向进行了展望。

Membrane-based separation technology has attracted great interest from researchers, which was attributed to its advantages such as high separation efficiency, low energy consumption, and flexible operating conditions. Chabazite is not only an important catalyst and adsorbent, but also an excellent material for membrane separation. In this paper, the framework structure, physical properties and chemical properties of CHA zeolite were briefly reviewed. The latest advances and prospect of CHA zeolite membrane in the field of gas separation and organic solvent dehydration were mainly addressed. We summarized the advantages and characteristics of aluminosilicate-type and phosphoaluminate-type CHA membrane for separation. It is pointed out that the key to prepare CHA membrane with high performance lies in the controlled adjustment of the Si/Al ratio of CHA zeolite membrane. On this basis, the future development of CHA membrane research was prospected.

基金项目：

国家自然科学基金项目（21776032）资助。

作者简介：

李璘喆（1995-），男，黑龙江省依兰县，硕士研究生，研究方向为微孔分子筛膜的制备与应用

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