Abstract
Four novel amino-functionalized ionic liquids were prepared with high yield (80%-90%) in a simple, straightforward, one-step synthetic method; their structures were characterized by IR, UV, and NMR, their important physical and chemical properties have been detected. According to the research of their application in absorbing SO2, these ionic liquids can act as promising perfect adsorbents with the advantages of high absorption efficiency (1.06-2.50 of the MR ratio), with high desorption efficiency of 90%-100%. In addition, it was found that these ionic liquids could be reused without significant loss of reactivity; these ionic liquids were valuable for academic and industrial application.
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