Designing of anion-functionalized ionic liquids for efficient capture of SO2 from flue gas
Designing of anion-functionalized ionic liquids for efficient capture of SO2 from flue gas
复制标题
设计阴离子功能化离子液体以有效捕获烟气中的 SO2
DOI：
10.1002/aic.14793
复制
发表时间：
2015-06-01
期刊：
影响因子：
3.7
通讯作者：
Wang, Congmin
中科院分区：
文献类型：
--
作者：
Chen, Kaihong;Lin, Wenjun;Wang, Congmin
选择了5种不同碱性和取代基的阴离子功能化离子液体（ILs），并将其应用于烟气中SO2的捕集，其中SO2的浓度仅为2000 ppm。研究了在2000 ppm以下阴离子对SO2吸收量、解吸残留量和有效吸收量的影响。研究了有效吸收量与吸收焓的关系。通过热力学分析和量子计算相结合的方法，结果表明离子液体中的阳离子对吸收焓的影响是显著的。然而，阳离子中链长的影响很弱。因此，进一步设计了一种具有低分子量的新型IL，[P4442][Tetz]，并用于捕获SO2，其显示出每g IL 0.18 g SO2的高吸收容量和对2000 ppm SO2的优异可逆性。© 2015美国化学工程师学会AIChE J，61：2028-2034，2015
Five kinds of anion-functionalized ionic liquids (ILs) with different basicity and substituent were selected, prepared and applied in the capture of SO2 from flue gas, where the concentration of SO2 is only 2000 ppm. The effect of the anion on SO2 absorption capacity, desorption residue, and available absorption capacity under 2000 ppm was investigated. The relationship between available absorption capacity and absorption enthalpy was also studied. Through a combination of thermodynamic analysis and quantum calculation, the results indicated that the effect of the cation in the IL on absorption enthalpy was significant. However, the effect of chain length in the cation was weak. Hence, a new IL with low molecular weight, [P4442][Tetz], was further designed and applied for the capture of SO2, which shows the high absorption capacity of 0.18 g SO2 per g IL and excellent reversibility for 2000 ppm SO2. © 2015 American Institute of Chemical Engineers AIChE J, 61: 2028–2034, 2015