Grushevenko Evgenia, Chechenov Islam, Rokhmanka Tatyana, Anokhina Tatiana, Bazhenov Stepan, Borisov Ilya
A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Prospect 29, 119991 Moscow, Russia.
Federal Research Center Kazan Scientific Center of Russian Academy of Sciences, Lobachevskogo St. 2/31, 420111 Kazan, Tatarstan, Russia.
Polymers (Basel). 2024 Dec 18;16(24):3530. doi: 10.3390/polym16243530.
The pervaporation properties of membranes based on comb-like polysiloxanes when C-C alcohols are removed from water were studied for the first time. It was established that membranes based on comb-like polysiloxanes with linear aliphatic and organosilicon substituents have increased permeability selectivity for C alcohols. The obtained results were interpreted from the point of view of the solubility of the components of the separated mixture in polysiloxanes. It was shown that membranes based on polysiloxanes with linear substituents have increased butanol/water permeability selectivity (2.5-3.7). The achieved selectivity values correspond to the level of highly selective zeolite membranes, which allows for a reduction in energy consumption for the pervaporation removal of butanol by more than two times.
首次研究了基于梳状聚硅氧烷的膜在从水中去除碳 - 碳醇时的渗透汽化性能。结果表明，具有线性脂肪族和有机硅取代基的梳状聚硅氧烷膜对碳醇具有更高的渗透选择性。从分离混合物各组分在聚硅氧烷中的溶解度角度对所得结果进行了解释。结果表明，具有线性取代基的聚硅氧烷膜具有更高的丁醇/水渗透选择性（2.5 - 3.7）。所达到的选择性值与高选择性沸石膜的水平相当，这使得通过渗透汽化去除丁醇的能耗降低两倍以上。
