纤维素基磁性聚偕胺肟树脂的研究 Ⅴ.铜副族离子在树脂上的吸附与氧化还原反应  

Studies on Cellulose-based Magnetic Polyamidoxime Adsorbents Ⅴ. Adsorption and Redox Reaction of Copper Subgroup Ions with BMAO

作　　者：吴锦远[1] 杨超雄[1] 

机构地区：[1]中国科学院广州化学研究所,广州510650

出　　处：《纤维素科学与技术》2000年第1期1-8,共8页Journal of Cellulose Science and Technology

基　　金：中国科学院广州化学研究所纤维素化学开放研究实验室课题

摘　　要：研究了Cu2 +、Ag+和AuCl-4 在碱式纤维素基磁性聚偕胺肟树脂(BMAO)上的吸附行为。实验结果表明 ,吸附速度受粒内扩散所控制。测得吸附起始速度的顺序是Ag+>AuCl-4 >Cu2 +,认为与水合离子尺寸有关。根据扫描电镜观察和吸附动力学研究结果 ,提出并讨论了吸附The behaviors of Cu 2+ ,Ag+ and AuCl- 4 ions adsorbed by alkaline cellulose-based magnetic polyamidoxime adsorbent (BMAO) were investigated.The experimental results show that the adsorption velocity is controlled by intraparticle diffusion.The order of the initial velocities as measured was Ag+ > AuCl- 4 > Cu 2+ ,being affected by the size of the hydrated ions.Based on the observation of SEM and the studies of adsorption kinetics,the mechanisms of adsorption/exchange and redox reaction were proposed and discussed.

关 键 词：纤维素 磁性吸附剂 聚偕胺肟 吸附 氧化还原 

分 类 号：O636.11[理学—高分子化学] O647.33[理学—化学]