纤维素基磁性聚偕胺肟树脂的研究──树脂对氯钯酸的吸附行为  

STUDIES ON CELLULOSE-BASED MAGNETIC POLYAMIDOXIME ADSORBENTS-ADSORPTION FOR H_2PdCl_4

作　　者：林力克[1] 杨超雄[1] 吴锦远[1] 

机构地区：[1]中国科学院广州化学研究所,广州510650

出　　处：《离子交换与吸附》1997年第5期490-495,共6页Ion Exchange and Adsorption

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：H2PdCl4在纤维素基磁性聚偕胺肟树脂上的吸附是一个复杂的过程。在生成AO－H2pDcL4络合物时伴随着外加酸的竞争吸附、物理吸附和氧化还原作用等副反应。物理扩散和化学吸附均非吸附速度的控制阶段，表现为快的吸附速度，接触5分钟时，讨论了吸附机理。Adsorption of chloropalladic acid by alkaline cellulose-based magnetic polyamidoxime adsorbent (BMAO) is a complicated process. The competitive adsorption of hydrochloric acid presented in solution, the stemming from macromolecular field and the redox reaction between H2PdCl4 and amidoxime groups as the side reactions would accompany the formation of AO-H2PdCl4 complexes. Both of physical diffusion and chemiseal reaction are not referred to the rate-determining steps. As the result, It gives a rapid-adsorption. The adsorption efficiency(Qt/ Q∞) and the combination of H2PdCl4 to AO groups in molar ratio were found to be 0. 57 and 0. 54, respectively, after five minutes contact.The mechanism of adsorption was also discussed.

关 键 词：纤维素基 吸附剂 磁性树脂 聚偕胺肟 氯钯酸 

分 类 号：O647.33[理学—物理化学] O614.823[理学—化学]