Energy-efficient membrane technology has received tremendous attention for the separation of organic molecules; however, the separation of molecules of less than 100 Da has remained challenging. Herein, a membrane fabricated from interfacial polymerization on a polyketone support was used as an organic solvent reverse osmosis (OSRO) membrane for the separation of organic liquid mixtures. The chemically stable and highly cross-linked selective layer exhibited outstanding separation factors toward large nonpolar molecules from small polar ones with high fluxes. For example, separation factors of 8.4, 11.1, 14.9, and 38.0 were achieved toward toluene, pentane, hexane, and heptane (10 wt % in mixtures), respectively, from methanol solution at 3 MPa, with fluxes around 5 LMH. This membrane outperformed the currently available reverse osmosis membrane and organic solvent nanofiltration membranes in terms of stability and separation factor. This work promotes the development of OSRO separation of organic liquid mixtures without phase change.

中文翻译：

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使用脂族聚酮负载的聚酰胺有机溶剂反渗透（OSRO）膜进行有机液体混合物分离。

高效的膜技术在分离有机分子方面受到了极大的关注。然而，分离小于100 Da的分子仍然具有挑战性。在本文中，将由在聚酮载体上的界面聚合制成的膜用作用于分离有机液体混合物的有机溶剂反渗透（OSRO）膜。化学稳定且高度交联的选择性层对大的非极性分子与高通量的小极性分子表现出出色的分离因子。例如，在3 MPa的甲醇溶液中，通量约为5 LMH，对甲苯，戊烷，己烷和庚烷（混合物中占10 wt％）的分离系数分别为8.4、11.1、14.9和38.0。就稳定性和分离因子而言，该膜的性能优于目前可用的反渗透膜和有机溶剂纳滤膜。这项工作促进了OSRO分离有机液体混合物而没有相变的发展。