Polytriazole membranes with ultrathin tunable selective layer for crude oil fractionation
Polytriazole membranes with ultrathin tunable selective layer for crude oil fractionation
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DOI：
10.1126/science.abm7686
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发表时间：
2022-06-03
期刊：
影响因子：
56.9
通讯作者：
Nunes, Suzana P.
中科院分区：
文献类型：
--
作者：
Chisca, Stefan;Musteata, Valentina-Elena;Nunes, Suzana P.
The design of materials and their manufacture into membranes that can handle industrial conditions and separate complex nonaqueous mixtures are challenging. We report a versatile strategy to fabricate polytriazole membranes with 10-nanometer-thin selective layers containing subnanometer channels for the separation of hydrocarbons. The process involves the use of the classical nonsolvent-induced phase separation method and thermal cross-linking. The membrane selectivity can be tuned to the lower end of the typical nanofiltration range (200 to 1000 gram mole(-1)). The polytriazole membrane can enrich up to 80 to 95% of the hydrocarbon content with less than 10 carbon atoms (140 gram mole(-1)). These membranes preferentially separate paraffin over aromatic components, making them suitable for integration in hybrid distillation systems for crude oil fractionation.
