高等学校化学学报

高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (3): 419.

• 论文 • 上一篇    下一篇

纤维素基磁性聚偕胺肟树脂的研究——CuCl2的吸附行为

杨超雄, 吴锦远   

  1. 中国科学院广州化学研究所, 广州, 510650
  • 收稿日期:1996-11-12 出版日期:1998-03-24 发布日期:1998-03-24
  • 通讯作者: 杨超雄,女,61岁,研究员.
  • 作者简介:杨超雄,女,61岁,研究员.
  • 基金资助:

    中国科学院广州化学研究所纤维素化学开放研究实验室资助课题.

Studies on Cellulose-based Magnetic Polyamidoxime Adsorbents——Copper Chloride Adsorbed by Alkali-treated Resin

YANG Chao-Xiong, WU Jin-Yuan   

  1. Guangzhou Institute of Chemistry, Academic Sinica, Guangzhou, 510650
  • Received:1996-11-12 Online:1998-03-24 Published:1998-03-24

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摘要： CuCl2可吸附在碱式纤维素基磁性聚偕胺肟树脂(BMAO)上.接触20min时F=0.69,n([Cu2+]a)/n([AO])=0.59,此后吸附速度突然下降.动力学研究和扫描电镜观察表明,吸附后生成了二齿螯合物,随后进行氧化还原反应析出单质铜.BMAO适于在稀溶液中吸附Cu2+离子,也适于进行大规模吸附.

关键词: 纤维素基吸附剂, 聚偕胺肟, 吸附, 氯化铜, 氧化还原反应

Abstract: Cu2+ ions can be adsorbed by alkaline cellulose-based magnetic polyamidoxime adsorbent(BMAO). After contact for 20 min, the adsorption capacity and the binding ratio were found to be 0.69 and 0.59, respectively, and then the adsorption rate decreases suddenly. It is considered that the reaction is going into the next stage. The results of adsorption kinetics and the observation of SEM suggested that CuCl2 was adsorbed by BMAO to give a bidentate chelate, and the redox reaction took place between them afterwards. The results obtained by the variation of CuCl2 concentration or liquid-solid proportion show that BMAO is suitable for CuCl2 uptake from dilute solution and adsorption on a large-scale.

Key words: Cellulose-based adsorbent, Polyamidoxime, Adsorption, Copper chloride, Redox reaction

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