摘要
藉杯芳烃衍生物的识别作用可以实现对金属离子的选择性液膜传输 .本文研究了 4种新型杯 [4 ]冠醚对 5种过渡金属离子 ( Cu2 + ,Fe3+ ,Co2 + ,Ni2 + ,Zn2 + )的液膜传输行为 .发现其中酯型杯 [4 ]冠醚 ( )对 Cu2 +有优良的传输效能 ,并详细考察了各种因素 (包括源相和受相酸度、离子载体 的浓度、时间及温度等 )的影响 .指出载体 对 Cu2 + 的传输为 H+ 交换机理 。
Selective transport of metal ions across liquid membrane can be achieved by using calixarene derivatives with recognition groups. Four new calix crowns, in this work, were examined for the transport of transition metal ions such as Cu 2+ , Fe 3+ , Co 2+ , Ni 2+ and Zn 2+ . It was found that one of these calix crowns, 25,27 dihydroxy 26,28 (3,6 dioxa 2,7 dioxooctylene)dioxycalixarene (Ⅲ), transported efficiently Cu 2+ . Various factors affecting the transport of Cu 2+ with Ⅲ were investigated in detail, including source phase and receiving phases acidities, carrier concentration, time, temperature, etc .. The mechanism of H + exchange was suggested for the present system H 2O (liquid membrane) H 2O, and the transport process of Cu 2+ was briefly discussed.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第8期1315-1318,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金 (批准号 :2 9875 0 32 )
中国科学院院长基金等资助
