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Preparation and CO2 separation performance of NanoAg/IL/Pebax mixed matrix membranes

Authors： CHANG Xiaohu, LI Peng, GAO Jing, HE Gaohong

Units： 1. Engineering Technology Research Institute, SINOPEC Northwest Company of China Petroleum and Chemical Corporation, Urumqi 830011, China; 2. Key Laboratory of Enhanced Oil Recovery in Carbonate Fractured-vuggy Reservoirs, CNPC, Urumqi 830011, China; 3. School of Chemical Engineering, Dalian University of Technology, Dalian 116023, China

KeyWords： mixed matrix membranes, ionic liquids, gas separation, CO2

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2023,43(3):15-21

Abstract：

In order to solve the problem of interfacial compatibility between the polymer matrix and the filler in the mixed matrix membrane, three kinds of ionic liquids with different hydrophilic and hydrophobic properties ([Bmim][Tf2N], [Bmim][BF4] and [Bmim][PF6]) were used as interfacial affinity agents for Pebax matrix and nano-silver particles (NanoAg) to prepare mixed matrix membranes to explore the synergistic mechanism between their effects on the gas separation performance of the membrane. The morphology and degree of dispersion of the mixed matrix membrane was analyzed by scanning electron microscopy; the effect of IL on the mechanical properties and gas separation performance of the mixed matrix membrane was investigated by mechanical tension machine. The results showed that the addition of the [Bmim][BF4] increased the CO2/CH4 selectivity of the mixed matrix membrane to 35.84, which was 58.67% higher than that of the pure Pebax membrane.

Funds：

中国石化科技重大项目“顺北一区采输关键技术研究与应用”（P18022）；新疆维吾尔自治区自然科学基金-地州科学基金（2021D01F38）

AuthorIntro：

常小虎（1986-），陕西榆林人，男，本科，副研究员，研究方向油气集输处理与CO2捕集及清洁能源利用

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