Flexible Polypropylene-Supported ZIF-8 Membranes for Highly Efficient Propene/Propane Separation

作者：Zhao, Yali; Wei, Yanying^*; Lyu, Luxi; Hou, Qianqian; Caro, Juergen^*; Wang, Haihui^*

来源：Journal of the American Chemical Society, 2020, 142(50): 20915-20919.

DOI：10.1021/jacs.0c07481

• ORGANIC FRAMEWORK MEMBRANES
• POLYMERIC HOLLOW FIBERS
• MOLECULAR-SIEVING PROPERTIES
• MOF
• ULTRATHIN
• FABRICATION

Metal-organic framework (MOF) membranes have enormous potential in separation applications. There are several MOF membranes grown on polymer substrates aimed for scale-up, but their brittleness hampers any industrial application. Herein, intergrown continuous polypropylene (PP)-supported ZIF-8 membranes have been successfully synthesized via fast current-driven synthesis (FCDS) within 1 h. The PP-supported ZIF-8 membranes exhibit a promising separation factor of 122 +/- 13 for binary C3H6-C3H8 mixtures combined with excellent flexibility behavior. The C3H6/C3H8 separation performance of the PP-supported ZIF-8 membrane was found to be constant after bending the supported ZIF-8 film with a curvature of 92 m(-1). This outstanding mechanical property is crucial for practical applications. Moreover, we further synthesized ZIF-8 membranes on various polymer substrates and even polymer hollow fibers to demonstrate the production scalability.

• 单位
  清华大学