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讨论了含偕胺肟基螯合纤维对Au~(3+)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Au~(3+)的过程中,功能基螯合Au~(3+)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Au~(3+)的纤维经高温灼烧后合理便可得到海绵金。
The relationship between the reduction process of Au ~ (3 +) and the chelating and reducing reaction of the chelating fibers containing amidoxime groups was discussed. The results showed that the chelating fibers containing amidoxime groups chelated Au ~ (3 +) in the process of Au ~ (3 +) adsorption and then partially reduced to elemental gold while the amidoxime groups It is oxidized to an acylamino group to become a carboxyl group. Adsorption of Au ~ (3 +) fibers after burning at reasonable temperatures can be sponge gold.