摘要
本文通过对壳聚糖(chitosan)用H_2O_2-Fe(Ⅱ)作引发剂,用丙烯酸甲酯接枝及用水合肼对其进行改性。接枝和改性后产物对金属离子吸附性明显增加,尤其是提高了Au、Pd的分离富集效果。改性的产物,吸附容量Au为496mg/g干树脂。Pd为580mg/g干树脂。
The grafting copolymerization of methyl acrylate onto chitosan with H2O2-Fe (11) as initator was carried out and the obtained grafted copolymer was modified with hydrazine hydrate.The capacities of absorbing metals by the grafted copolymer and the modified grafted copolymer increased remarkably.The grafted copolymer,especially the modified grafted copolymer, show an excellent effectiveness in the separation and concentration of gold and palladium. The absorptive capacity of the modified grafted copolymer is 496mg/(g dry resin) for gold and 580mg/(g dry resin) for palladium.
出处
《黄金》
CAS
北大核心
1992年第3期57-60,共4页
Gold
关键词
壳聚糖
接枝
改性
金
钯
吸附
chitosan
chitosan-g-PMA Chitsan-g-PMA-NHNH2
