Dmitrieva Evgenia, Grushevenko Evgenia, Razlataya Daria, Golubev George, Rokhmanka Tatiana, Anokhina Tatyana, Bazhenov Stepan
A.V. Topchiev Institute of Petrochemical Synthesis RAS, Leninsky pr. 29, 119991 Moscow, Russia.
Membranes (Basel). 2022 Nov 2;12(11):1090. doi: 10.3390/membranes12111090.
Membranes based on natural polymers, in particular alginate, are of great interest for various separation tasks. In particular, the possibility of introducing silver ions during the crosslinking of sodium alginate makes it possible to obtain a membrane with an active olefin transporter. In this work, the creation of a hollow fiber composite membrane with a selective layer of silver alginate is proposed for the first time. The approach to obtaining silver alginate is presented in detail, and its sorption and transport properties are also studied. It is worth noting the increased selectivity of the material for the ethylene/ethane mixture (more than 100). A technique for obtaining a hollow fiber membrane from silver alginate has been developed, and its separating characteristics have been determined. It is shown that in thin layers, silver alginate retains high values of selectivity for the ethylene/ethane gas pair. The obtained gas transport properties demonstrate the high potential of using membranes based on silver alginate for the separation of an olefin/paraffin mixture.
基于天然聚合物，特别是藻酸盐的膜，对于各种分离任务具有极大的吸引力。特别是在海藻酸钠交联过程中引入银离子的可能性，使得获得具有活性烯烃转运体的膜成为可能。在这项工作中，首次提出创建具有藻酸银选择性层的中空纤维复合膜。详细介绍了获得藻酸银的方法，并研究了其吸附和传输特性。值得注意的是，该材料对乙烯/乙烷混合物的选择性有所提高（超过100）。已经开发出一种从藻酸银制备中空纤维膜的技术，并确定了其分离特性。结果表明，在薄层中，藻酸银对乙烯/乙烷气体对保持高选择性值。所获得的气体传输特性证明了使用基于藻酸银的膜分离烯烃/石蜡混合物的巨大潜力。
