Efficient olefin/paraffin separation is a grand challenge because of their similar molecular sizes and physical properties, and is also a priority in the modern chemical industry. Membrane separation technology has been demonstrated as a promising technology owing to its low energy consumption, mild operation conditions, tunability of membrane materials, as well as the integration of physical and chemical mechanisms. In this work, inspired by the physical mechanism of mass transport in channel proteins and the chemical mechanism of mass transport in carrier proteins, recent progress in channel‐based and carrier‐based membranes toward olefin/paraffin separations is summarized. Further, channel‐based membranes are categorized into membranes with network structures and with framework structures according to the morphology of channels. The separation mechanisms, separation performance, and membrane stability in channel‐based and carrier‐based membranes are elaborated. Future perspectives toward membrane‐based olefin/paraffin separation are proposed.

中文翻译：

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基于膜的烯烃/石蜡分离

由于烯烃/石蜡的分子大小和物理性质相似，高效分离烯烃/石蜡是一项巨大的挑战，也是现代化学工业的首要任务。膜分离技术因其能耗低、操作条件温和、膜材料的可调性以及物理和化学机制的集成等优点而被证明是一种很有前景的技术。在这项工作中，受通道蛋白传质物理机制和载体蛋白传质化学机制的启发，总结了基于通道和基于载体的膜在烯烃/石蜡分离方面的最新进展。此外，根据通道的形态，基于通道的膜分为具有网络结构的膜和具有框架结构的膜。详细阐述了基于通道和基于载体的膜的分离机制、分离性能和膜稳定性。提出了基于膜的烯烃/石蜡分离的未来前景。