A novel hydrophilic amino acid ionic liquid [C(2)OHmim][Gly] as aqueous sorbent for CO2 capture
A novel hydrophilic amino acid ionic liquid [C(2)OHmim][Gly] as aqueous sorbent for CO2 capture
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一种新型亲水性氨基酸离子液体[C(2)OHmim][Gly]作为CO2捕获的水性吸附剂
DOI：
10.1016/j.ijggc.2015.12.029
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发表时间：
2016
影响因子：
3.9
通讯作者：
Li Sujing
中科院分区：
文献类型：
--
作者：
Lv Bihong;Xia Yinfeng;Shi Yun;Liu Nan;Li Wei;Li Sujing
功能化离子液体（ILs）通过在常规离子液体中引入合适的基团，可以获得优异的CO2捕集性能，因此设计和合成新型离子液体引起了人们的极大兴趣。在咪唑类离子液体的基础上，引入甘氨酸阴离子和羟基，设计了一种新型的亲水性氨基酸离子液体（[C2 OHmim][Gly]）。[C2 OHmim][Gly]的吸收容量为0.575 mol CO2/mol吸收剂，其类似于遵循两性离子机理的等摩尔化学计量。这种功能化离子液体具有合成简单、吸附容量大、耐氧性好、再生效率高等优点，有望弥补水溶液MEA的不足，有利于工业化应用。
Since functionalized ionic liquid (ILs) could achieve excellent performance on CO2capture by introducing suitable moieties in the conventional ionic liquids, design and synthesis of new ionic liquids have been attracting remarkable interests. In this work, we designed a novel hydrophilic amino acid ionic liquid ([C2OHmim][Gly]) that was functionalized based on the imidazolium ionic liquid with glycine anions and hydroxy group for CO2absorption. The absorption capacity of [C2OHmim][Gly] was 0.575 mol CO2/mol absorbent that was similar to the equimolar stoichiometry following the zwitterion mechanism. Simple synthesis, large absorption capacity, good resistance to O2, and high regeneration efficiency make this functionalized ILs great potential for making up the deficiencies of aqueous MEA, therefore benefiting industrial applications.