基于沸石分子筛的多孔液体的设计合成与性能研究

Porous solids such as zeolites1 and metal–organic frameworks are useful in molecular separation and in catalysis. They exhibit many useful properties arising from their ability to absorb and discriminate between guest molecules with different shapes, sizes, and functional groups. However, they are difficult to implement in conventional flow processes or dispersed evenly on the smooth surface, which limits their application. Porous liquids would be of considerable fundamental interest. They could combine properties of microporous solids, such as size- and shape-selective sorption and so forth, with the rapid mass transfer, fluidity and fast kinetics of liquids.In this project, we intend to do research on the preparation and properties investigation of porous liquids. A series of porous liquids will be designed and synthesized. The research contents include the following aspects: (1) The preparation of zeolites nanocrystals with specific structures, composition, and size; (2) The preparation of porous liquids based on the zeolites nanocrystals; (3) The properties investigation of porous liquids by the gas separation and storage. I gained solid experience in the synthesis and properties investigation of porous materials. In general, the research will help us to enhance the synthesis strategy and understand the properties of porous liquids, and to provide the theoretical and experimental basis for the development of porous liquid materials for gas separation and storage.

沸石和MOFs等多孔材料被应用于分子择形分离，并且可以承载催化剂以驱动化学反应。但它们作为固体缺乏流动性，不能在管道中流动或在平滑表面上均匀分散，从而限制了其应用。新型多孔液体，可以结合固体多孔材料的择形选择吸附与液体的流动性、快速传质等优点，有望实现对具有不同尺寸、构型的分子实现选择性吸附分离及择形催化。本项目力求设计合成出一系列基于沸石分子筛的多孔液体材料，并探索其在气体吸附分离等方面的应用。具体研究内容包括以下几方面：（1）制备具有不同尺寸、不同结构及化学组成的分子筛纳米晶体；（2）以所合成的分子筛纳米晶体作为主体，制备多孔液体；（3）对所制备的多孔液体的气体分离与存储等性能进行研究，探索其应用。项目申请人在多孔材料的合成与性能研究方面具有丰富的经验，本课题的研究成果，可以加深对多孔液体的合成策略及其性能的了解，为开发可用于气体分离与存储的新型多孔液体材料提供理论基础和实验依据。

沸石和MOFs等多孔材料具有稳定的、尺寸均一、形状规则的微孔结构，它们可以被应用于分子择形分离，并且可以承载催化剂以驱动化学反应。但它们作为固体缺乏流动性，不能在管道中流动或在平滑表面上均匀分散，这也限制了它们在某些工业流程中的应用。新型多孔液体，可以结合固体多孔材料的择形选择吸附与液体的流动性、快速传质等优点，有望实现对具有不同尺寸、构型的分子实现选择性吸附分离及择形催化。在项目执行过程中，我们设计合成了基于沸石的多孔液体材料，并探索其在气体吸附分离等方面的应用。通过我们的研究，可以加深对多孔液体在气体分离与存储领域潜在应用价值的了解，为开发新型液相气体分离与存储材料提供理论基础和实验依据。