Extraction of Sr<sup>2+</sup> with thiacalix[4]arene-biscrowns 4 in HNO<sub>3</sub> solution

LI Jie; ZHOU Lijuan; ZHANG Dongxiang; LIU Cong; Tarasov V. V.

doi:10.11949/j.issn.0438-1157.20141122

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Extraction of Sr²⁺ with thiacalix[4]arene-biscrowns 4 in HNO₃ solution

更新时间：2025-12-10

- Extraction of Sr²⁺ with thiacalix[4]arene-biscrowns 4 in HNO₃ solution
- CIESC Journal Issue 3, Pages: 1035-1041(2015)
- 作者机构：
  
  1. 北京理工大学化工与环境学院,北京,100081
  2. 俄罗斯门捷列夫化工大学,莫斯科,125190
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20141122
  CLC： 625
- Online First：05 March 2015，
  
  Published：05 March 2015
- 稿件说明：
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LI Jie, ZHOU Lijuan, ZHANG Dongxiang, et al. Extraction of Sr²⁺ with thiacalix[4]arene-biscrowns 4 in HNO₃ solution[J]. CIESC Journal, 2015, (3): 1035-1041. DOI: 10.11949/j.issn.0438-1157.20141122.
DOI：

LI Jie, ZHOU Lijuan, ZHANG Dongxiang, et al. Extraction of Sr²⁺ with thiacalix[4]arene-biscrowns 4 in HNO₃ solution[J]. CIESC Journal, 2015, (3): 1035-1041. DOI: 10.11949/j.issn.0438-1157.20141122. DOI：

摘要

乏燃料后处理的高放废液分离过程中

发展新型分离材料实现对锶的高效萃取至关重要。合成了1

2交替构象的硫代杯[4]冠-4(TCACE)

利用FT-IR、1H NMR和MS对目标产物进行了表征。研究不同稀释剂对萃取的影响

优化得出CH2Cl2为稀释剂

在硝酸浓度为3 mol·L-1

有机相中硫代杯[4]冠-4浓度为1×10-3 mol·L-1

水相中Sr2+浓度为5×10-4 mol·L-1

萃取温度为25℃

萃取80 min条件下

平均传质系数为1.36×10-5 m·s-1

Sr2+的分配比为0.69。分析了不同条件对硫代杯[4]冠-4对Sr2+的萃取影响

研究了萃取计量方程式

实验结果表明萃合物为{Sr(NO3)2}·{TCACE}。研究了TCACE对其他金属离子Mo6+、Ni2+、Ag+、Sn4+等的萃取效果

表明对Sr2+具有较好的选择性。

Abstract

In the high-level radioactive waste liquid separation process of spent fuel reprocessing

new separation materials are of great significance for the efficient extraction of strontium. In the paper

2-alternate thiacalix[4]biscrowns 4 (TCACE) was synthesized by using calix[4]arene and triethylene glycol di(p-toluenesulfonate). TCACE was characterized by FT-IR

1H NMR and MS. The influence of different diluents on extraction rate was studied

and CH2Cl2 was chosen as diluent by optimization. Extraction rate of Sr2+ was excellent and average mass transfer coefficient was 1.36×10-5 m·s-1 under the conditions of CH2Cl2 as organic solvent

nitrate acid concentration was 3 mol·L-1

TCACE concentration was 1×10-3 mol·L-1

Sr2+ concentration was 5×10-4 mol·L-1

extraction was conducted for 80 min and at 25℃. Different technological conditions on extraction for Sr2+ were studied. Furthermore

the extraction measurement equation was also studied. The extraction complex was {Sr(NO3)2}·{TCACE} as shown by experiment. The extraction effects for other metal ions Mo6+

Ni2+

Ag+

Sn4+ with TCACE were also studied. It was found that TCACE showed excellent selectivity for Sr2+.

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Extraction of Sr2+ with thiacalix[4]arene-biscrowns 4 in HNO3 solution

DOI：10.11949/j.issn.0438-1157.20141122

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Extraction of Sr²⁺ with thiacalix[4]arene-biscrowns 4 in HNO₃ solution