高等学校化学学报

高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (2): 287.

• 研究论文 • 上一篇    下一篇

用含偕胺肟基螯合纤维吸附、还原Au3+的研究(Ⅱ)——氧化还原过程的初步研究

林伟平, 符若文, 汤丽鸳, 陆耘, 曾汉民   

  1. 中山大学材料科学研究所, 广州 510275
  • 收稿日期:1992-04-07 修回日期:1992-10-31 出版日期:1993-02-24 发布日期:1993-02-24
  • 通讯作者: 林伟平
  • 基金资助:

    国家教育委员会博士点基金;中山大学科研基金

Studies on the Adsorption and Reduction of Au3+ Ion with Chelating Fiber Containing Amidoxime Group (Ⅱ)——Preliminary Studies on the Oxidation-Reduction Process

LIN Wei-Ping, FU Ruo-Wen, TANG Li-Yuan, LU Yun, ZENG Han-Min   

  1. Materials Science Institute, Zhongshan University, Guangzhou, 510275
  • Received:1992-04-07 Revised:1992-10-31 Online:1993-02-24 Published:1993-02-24

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摘要： 讨论了含偕胺肟基螯合纤维对Au3+的还原过程及螯合与还原反应间的关系。结果表明,含偕胺肟基螯合纤维在吸附Au3+的过程中,功能基螯合Au3+之后再将其部分还原成单质金,而偕胺肟基则先被氧化成酰氨基进而变成羧基。吸附了Au3+的纤维经高温灼烧后合理便可得到海绵金。

关键词: 偕胺肟基, Au3+, 螫合, 氧化还原, 海绵金

Abstract: The relationship between chelating and reduction in the adsorption process of Au3+ ion onto chelating fiber containing amidoxime group was discussed.It is shown that, during the adsorption process for Au3+, the chelating fiber chelates with Au3+ ion at first, then partially reduces the adsorbed Au3+ ion into gold; the amidoxime group is gradually oxidized into amide group and carboxyl group.After the fiber with adsorbed Au3+ ion is burnt out at high temperature, spongy metallic gold is obtained.

Key words: Amidoxime group, Au3+ ion, Chelation, Oxidation-reduction, Spongy gold

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