Abstract A novel ion gel membrane composed of a specific inorganic/organic composite network and a large amount of room temperature ionic liquid (RTIL) was fabricated. Owing to the rigid and fragile inorganic component, the ion gel had very high mechanical strength. Even though the RTIL content was 80 wt%, the ion gel withstood more than 10 MPa of compressive stress. Owing to the high mechanical strength and good RTIL-holding property of the ion gel, the ion gel membrane had excellent pressure resistance, which could be used under pressurized conditions of more than 600 kPa for the trans-membrane pressure difference. Furthermore, it was confirmed that the ion gel membrane containing more than 70 wt% of 1-ethyl-3-methylimidazolium tetracyanoborate ([C 2 mim][B(CN) 4 ]) showed higher CO 2 permeability than supported liquid membranes (SILMs). A comparison of the CO 2 permeability of the composite ion gel membrane with 80 wt% of [C 2 mim][B(CN) 4 ] (ca. 2600 barrer) with the theoretically predicted maximum CO 2 permeability of an [C 2 mim][B(CN) 4 ]-based membrane (2910 barrer) indicated that the composite network showed a deficit of only 10% of the maximum CO 2 permeability. The [C 2 mim][B(CN) 4 ]-based inorganic/organic composite membrane showed better CO 2 separation performance than previously reported RTIL-based CO 2 separation membranes and the obtained performances were beyond Robeson's upper bound.

中文翻译：

---

具有高机械强度和高CO 2 分离性能的无机/有机复合离子凝胶膜

摘要 制备了一种由特定无机/有机复合网络和大量室温离子液体（RTIL）组成的新型离子凝胶膜。由于无机成分的刚性和脆性，离子凝胶具有非常高的机械强度。即使 RTIL 含​​量为 80 wt%，离子凝胶也能承受超过 10 MPa 的压缩应力。由于离子凝胶的高机械强度和良好的RTIL保持性能，离子凝胶膜具有优异的耐压性，可在600kPa以上的跨膜压差加压条件下使用。此外，证实了含有超过 70 wt% 1-乙基-3-甲基咪唑鎓四氰基硼酸盐 ([C 2 mim][B(CN) 4 ]) 的离子凝胶膜显示出比支撑液膜 (SILMs) 更高的 CO 2 渗透率）。具有 80 wt% [C 2 mim][B(CN) 4 ]（约 2600 barrer）的复合离子凝胶膜的 CO 2 渗透率与理论预测的 [C 2 mim] 的最大 CO 2 渗透率的比较][B(CN) 4 ] 基膜（2910 barrer）表明复合网络仅显示最大 CO 2 渗透率的 10% 的不足。[C 2 mim][B(CN) 4 ]基无机/有机复合膜表现出比先前报道的基于RTIL的CO 2 分离膜更好的CO 2 分离性能，并且获得的性能超出了Robeson的上限。2600 barrer）与基于 [C 2 mim][B(CN) 4 ] 的膜（2910 barrer）的理论预测最大 CO 2 渗透率表明复合网络仅显示最大 CO 2 渗透率的 10% . [C 2 mim][B(CN) 4 ]基无机/有机复合膜表现出比先前报道的基于RTIL的CO 2 分离膜更好的CO 2 分离性能，并且获得的性能超出了Robeson的上限。2600 barrer）与基于 [C 2 mim][B(CN) 4 ] 的膜（2910 barrer）的理论预测最大 CO 2 渗透率表明复合网络仅显示最大 CO 2 渗透率的 10% . [C 2 mim][B(CN) 4 ]基无机/有机复合膜表现出比先前报道的基于RTIL的CO 2 分离膜更好的CO 2 分离性能，并且获得的性能超出了Robeson的上限。