UNS: ZIF Membranes with Gated-Ultramicropores for Gas Separation

沸石咪唑盐框架是一种很有前途的用于气液分离的微孔金属-有机框架膜材料。然而，尽管有大量的沸石咪唑酯骨架材料，但这些材料中只有少数被制成膜。这些膜仍然不能提供理想的孔径来分离一些工业上重要的气体混合物，如乙烯和乙烷。该项目将研究通过一种新的膜表面改性方法合成具有可定制孔径的门控微孔的金属-有机框架膜，用于分离工业上重要的气体混合物。本项目将研究利用膜表面改性法对微孔金属-有机框架膜进行合成后改性，合成并表征改性后的金属-有机框架膜，用于分离包括乙烯/乙烷在内的小气体混合物。这些研究将展示一种用于气体分离的新型膜结构，并为合成其他用于气体和液体混合物分离的微孔金属-有机框架膜的合成后修饰新方法奠定基础。这些微孔膜的成功合成将代表膜科学的一个重要进展，因为这将导致许多其他高性能膜的发展，用于分离接近分子大小的气体和液体混合物。该项目还将教育和培训研究生，本科生和高中生，特别是女生和少数民族学生，成为膜科学和分离技术的领导者。

1511005LinArizona State UniversityZeolitic imidazolate frameworks are a promising group of microporous metal-organic framework membrane materials for gas and liquid separation. However, in spite of a large number of zeolitic imidazolate framework materials, only a few of these materials have been made into membranes. These membranes still do not offer the desired pore size for separation of some industrially important gas mixtures, such as ethylene and ethane. This project will investigate synthesis of metal-organic framework membranes with gated-micropores of tailorable pore size by a new membrane surface modification method for separation of industrially important gas mixtures. Research will be conducted in this project to understand the post-synthesis modification of microporous metal-organic framework membranes by the membrane surface modification method, and to synthesize and characterize the modified metal-organic framework membranes for separations of small gas mixtures including that of ethylene/ethane. These studies will demonstrate a new membrane structure for gas separation and establish the foundation for the new post-synthesis modification method for synthesis of other microporous metal-organic framework membranes for separation of gas and liquid mixtures. Successful synthesis of these microporous membranes will represent an important advance in membrane science because this will lead to the development of many other high performance membranes for separation of gas and liquid mixtures of a close molecular size. The project will also educate and train graduate, undergraduate and high school students, in particular, female and minority students, to become leaders in membrane science and separation technologies.