Why is thenoyltrifluoroacetone (TTA) chosen as the carrier in the polymer inclusion membrane (PIM) for separating hydroxylamine (HA)?

Label:chem

Topic
In the study, various carriers were screened to prepare the polymer inclusion membrane (PIM) for the selective separation of hydroxylamine (HA) from metal ions. The choice of carrier is critical as it determines the selectivity and efficiency of the separation process.
Answer
Thenoyltrifluoroacetone (TTA) was chosen as the carrier in the PIM because it contains multiple carbonyl groups that provide abundant binding sites for HA. This allows for efficient transport of HA across the membrane. The study found that PIMs with TTA as the carrier exhibited significantly higher selectivity and permeability for HA compared to other tested carriers like SMP-II and SPEEK. Specifically, the separation factors for NH2OH(I)/K(I) and NH2OH(I)/Na(I) were 37.8 and 39.9, respectively, when TTA was used, indicating its superior performance in selective separation.
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