用于苛刻天然气分离的分子设计稳定不对称中空纤维膜。
Molecularly Designed Stabilized Asymmetric Hollow Fiber Membranes for Aggressive Natural Gas Separation.
机构信息
School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia, 30332-0100, USA.
State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, 210009, P. R. China.
出版信息
Angew Chem Int Ed Engl. 2016 Oct 24;55(44):13754-13758. doi: 10.1002/anie.201607055. Epub 2016 Oct 4.
New rigid polyimides with bulky CF groups were synthesized and engineered into high-performance hollow fiber membranes. The enhanced rotational barrier provided by properly positioned CF side groups prohibited fiber transition layer collapse during cross-linking, thereby greatly improving CO /CH separation performance compared to conventional materials for aggressive natural gas feeds.
合成了具有大体积 CF 基团的新型刚性聚酰亚胺，并将其设计成高性能的中空纤维膜。适当定位的 CF 侧基提供的增强旋转势垒阻止了纤维过渡层在交联过程中的坍塌，从而与用于苛刻天然气进料的传统材料相比，大大提高了 CO/CH 的分离性能。
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