材料期刊网

通过亲核加成和离子交换,制备出一种新型含醚键侧链的氨基酸离子液体1-乙氧基乙氧基乙基-3-甲基咪唑甘氨酸盐([ EOEOEmim][ Gly]),使用 IR和1 H NMR确定产物结构。采用湿法浸渍-蒸发法将[ EOEOEmim][ Gly]负载于三种聚苯乙烯多孔树脂( D101、DM301、CAD -40)中,制成固体吸附剂。常温常压下,对三种固体吸附剂的 CO2捕获性能进行研究。研究结果表明,相比于[ EOEOEmim][ Gly],三种固体吸附剂的CO2饱和捕获时间显著缩短,CO2饱和捕获容量升高,5次吸附/解吸附循环吸附量不降低,说明含醚键侧链的氨基酸离子液体负载型固体吸附剂在CO2捕获领域具有良好的应用前景。

The 1-Ethoxyethoxyethyl-3-methylimidazolium glycine [ EOEOEmim ] [ Gly ] ionic liquids was syn-thesized by introducing ether bonds on side chain of imidazole cation. ILs structure were confirmed by 1 H NMR and IR. [ EOEOEmim] [ Gly]-impregnated EPS sorbents were synthesized through a well-studied wet impregnation-va-porization method. The performance of CO2 capture were tested under normal temperature and pressure for pure ion-ic liquids and solid adsorbents,respectively. The results showed that,both the saturation time and the capacity of CO2 capture were greatly improved for solid sorbents compared to the pure ionic liquid. The saturation time have decreased significantly,and the capacity of CO2 have increased. Moreover,no obvious loss in adsorption capacity was observed after 5 cycles for [ EOEOEmim] [ Gly]-EPS sorbent. The tests indicated that the amino acid liquid i-onic immobilized into porous resin which contain ether side chains may be a promising candidate for post-combus-tion CO2 capture.