Inclusion extraction of alkali metals by emulsion liquid membranes bearing nano-baskets
Inclusion extraction of alkali metals by emulsion liquid membranes bearing nano-baskets
复制标题
DOI：
10.1007/s10847-012-0212-y
复制
发表时间：
2013-08
影响因子：
2.3
通讯作者：
B. Mokhtari;K. Pourabdollah
中科院分区：
文献类型：
--
作者：
B. Mokhtari;K. Pourabdollah
报道了通过包合促进乳液液膜工艺从碱性溶液中纳米辅助包合分离碱金属。本研究的新颖性和意义在于杯芳烃纳米篮作为载体和表面活性剂在碱金属选择性和高效分离中的应用。为此，合成了四种带有不同磺酰胺部分的对叔杯[4]芳烃衍生物，并优化了它们的包合-萃取参数。使用杯芳烃支架03（3.45×10−2M）作为载体/破乳剂，商业煤油作为膜稀释剂，磺酸（0.2M）和碳酸铵（0.4M）作为剥离相和进料相，相和处理比为0.8和0.3，混合速度（300rpm）和初始溶质浓度，实现最大萃取（100 毫克/升）。测试了膜对十多种干扰阳离子的选择性，结果表明，在优化的操作条件下，碱金属的萃取率为 98-99%。
Nano-assisted inclusion separation of alkali metals from basic solutions was reported by inclusion-facilitated emulsion liquid membrane process. The novelty and significance of this study is application of nano-baskets of calixarene in the selective and efficient separation of alkali metals, as both carrier and surfactant. For this aim, four derivatives ofp-tert-calix[4]arene bearing different sulfonamide moieties were synthesized and their inclusion-extraction parameters were optimized. Maximum extraction was achieved using calixarene scaffold03(3.45 × 10−2M) as carrier/demulsifier, commercial kerosene as diluent in membrane, sulphonic acid (0.2 M) and ammonium carbonate (0.4 M) as the strip and the feed phases, the phase and the treat ratios of 0.8 and 0.3, mixing speed (300 rpm), and initial solute concentration (100 mg/L). The selectivity of membrane over more than ten interfering cations was examined and the results reveled that under the optimized operating conditions, the extraction percent of alkali metals was 98–99 %.