High-performance polymer molecular sieve membranes prepared by direct fluorination for efficient helium enrichment
Xiaohua Ma, Kaihua Li, Zhiyang Zhu, Hao Dong, Jia Lv, Yingge Wang, Ingo Pinnau, Jianxin Li, Bowen Chen, Yu Han
Abstract
Direct fluorination of membranes with intrinsic microporosity produces robust and aging-resistant membranes with exceptionally high He/CH 4 separation performances, which are particularly useful for enriching He from natural gas.
Topics & Concepts
MembraneMolecular sievePolymerChemical engineeringMaterials scienceGas separationNatural gasSieve (category theory)ChemistryPolymer chemistryChromatographyOrganic chemistryComposite materialAdsorptionEngineeringMathematicsBiochemistryCombinatoricsMembrane Separation and Gas TransportInorganic Fluorides and Related CompoundsMuon and positron interactions and applications