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化工进展  2015 

离子热合成沸石分子筛:技术特性、研究进展与应用前景

DOI: 10.16085/j.issn.1000-6613.2015.06.001, PP. 1501-1510

Keywords: 离子热合成,分子筛,结晶,,微波化学,溶剂效应

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Abstract:

离子热法是一种以离子液体或低共熔物为反应介质、在低挥发性的离子态反应环境中合成沸石分子筛的方法。离子热合成可在接近常压下进行,因此不但能够克服常规液相合成体系高压带来的操作困难,而且为分子筛合成机理研究提供了便利,同时便于与微波等电磁技术耦合。本文总结了离子热法在沸石分子筛材料合成及机理研究方面取得的进展。通过调变反应介质种类、反应物组成、晶化条件以及添加氟或有机胺等可以得到不同组成、结构的沸石分子筛产物以及AlPO、SAPO分子筛膜;在离子热合成过程中,离子液体和低共熔物的阳离子、有机胺或铵盐、金属阳离子等能够独立或协同起到结构导向作用。预期离子热法可为分子筛器件的放大生产提供一条灵活、方便的途径。

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