Nano-baskets of Calix[4]-l,3-crown in Emulsion Membranes for Selective Extraction of Alkali Metal Cations  

作　　者：Bahram Mokhtari Kobra Pourabdollah 

机构地区：[1]Department of Chemical Engineering, Shahreza Branch, islamic Azad University, Shahreza, lran

出　　处：《Chinese Journal of Chemical Engineering》2013年第11期1313-1318,共6页中国化学工程学报（英文版）

基　　金：supported by Islamic Azad University (Shahreza Branch);Iran Nanotechnology Initiative Council

摘　　要：Nano-assisted inclusion separation of alkali metals from basic solutions was reported by inclu sion-facilitated emulsion liquid membrane process. The novelty of this study is application of nano-baskets of calixcrown in the selective and efficient separation of alkali metals as both the carrier and the surfactant. For this aim, four derivatives of diacid calix[4]-1,3-crowns-4,5 were synthesized, and their inclusion-extraction parameters were optimized including the calixcrown scaffold （4.4%, by mass） as the carrier/demulsifier, the commercial kero sene as diluent in membrane, sulphonic acid （0.2 mol.L-1） and ammonium carbonate （0.4 mol.L-1） as the strip and the feed phases, the phase and the treat ratios of 0.8 and 0.3, mixing speed （300 r.min-1）, and initial solute concentration （100 mg.L-1）. The selectivity of membrane over more than ten interfering cations was examined and the re sults reveled that under the optimized operating condition, the degree of inclusion-extraction of alkali metals was as high as 98%-99%.从基本解决方案的碱金属的帮助 Nano 的包括分离被便于包括的乳剂液体膜过程报导。这研究的新奇作为搬运人和表面活化剂是在碱金属的选择、有效的分离的 calixcrown 的 nano 篮子的申请。为这个目的，二酸杯的四衍生物[4 ]-1,3-crowns-4,5 被综合，并且他们的包括抽取参数包括 calixcrown 支架被优化(4.4% ，由质量) 作为 carrier/demulsifier，商业煤油作为在膜稀释，磺基酸(0.2 摩尔？

关 键 词：NANO-BASKET INCLUSION CALIXCROWN emulsion liquid membrane alkali metals 

分 类 号：TQ028.8[化学工程] O614.11[理学—无机化学]