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本文研究了2,3-苯并-11-甲基-18-冠-6,2,3-苯并-8,15-二甲基-18-冠-6和2,3-苯并-8,11,15-三甲基-18-冠-6的氯仿液膜对Na~+,K~+,Rb~+的传输速率.结果指出,传输速率随膜相冠醚浓度增加而增加,两者成线性关系;当冠醚的醚环上甲基数增加则传输速率减小;对同一冠醚,不同金属离子的传输速率与相应配合物稳定常数的大小顺序有一致关系;冠醚传输金属离子时,阴离子一起迁移,阴离子水合能力越强则传输能力越小;传输速率与搅拌速度成线性关系.
In this paper, 2,3-benzo-11-methyl-18-crown-6,2,3-benzo-8,15-dimethyl-18-crown-6 and 2,3-benzo-8 , The transfer rate of Na ~ +, K ~ +, Rb ~ + of chloroform solution of 11,15-trimethyl-18-crown-6 was studied.The results showed that the transfer rate increased with the increase of crown ether concentration The linear relationship was obtained when the number of methyl groups on the ether ring of crown ether increased and the transfer rate decreased. The transfer rates of different metal ions for the same crown ether had the same relationship with the order of the stability constants of the corresponding complexes. Ions, the anions migrate together, the stronger the anion hydration ability, the smaller the transmission capacity; the transfer rate and the stirring speed become a linear relationship.