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根据高放废液中Sr~(2+)的萃取分离需求,合成了对叔丁基杯[6]甲酯芳烃(Calix SMO),并利用FT-IR、1H-NMR和MS表征确认了其化学结构。选择CH2Cl2作为Calix SMO的稀释剂,当体系初始HNO3浓度为3 mol×L-1时,在298 K下,萃取时间120 min,对Sr~(2+)的萃取率为60%;通过计算,有机相中Calix SMO与Sr~(2+)包合比为1:2。分别研究对K+、Sb3+、Ca~(2+)、Sm3+、Sn4+、Na+的萃取,表明Calix SMO对Sr~(2+)有良好的选择性。
According to the demand of extraction and separation of Sr 2+ in high-level liquid waste, Calix SMO was synthesized and characterized by FT-IR, 1H-NMR and MS Chemical structure When CH2Cl2 was chosen as the diluent of Calix SMO, the extraction rate of Sr2 + was 60% at 298 K with the initial HNO3 concentration of 3 mol × L-1. The inclusion ratio of Calix SMO and Sr ~ (2+) in the organic phase is 1: 2. The extraction of K +, Sb3 +, Ca ~ (2 +), Sm3 +, Sn4 + and Na + were studied respectively. It shows that Calix SMO has good selectivity for Sr ~ (2+).