1. Etched ZIF‐8 as a Filler in Mixed‐Matrix Membranes for Enhanced CO2/N2 Separation.
- Author
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Zhou, Yichen, Jia, Mingmin, Zhang, Xiongfei, and Yao, Jianfeng
- Subjects
PERMEABILITY ,SEPARATION of gases ,CRYSTALS ,METAL-organic frameworks - Abstract
Zeolite ZIF‐8 has been etched with acid to form microporous ZIF‐8‐E crystals. These were then introduced into a polyethersulfone (PES) membrane matrix to enhance its CO2/N2 separation performance. Open through pores of size about 100 nm formed in the ZIF‐8 crystals allow the ingrowth of polyethersulfone chains, ensuring a reduction in the number of nonselective voids, thereby achieving better interaction between ZIF‐8‐E and PES. As a result, the CO2/N2 separation performance of the ZIF‐8‐E/PES membrane increased significantly, showing a CO2 permeability of 15.7 Barrer and a CO2/N2 ideal selectivity of 6.5. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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