摘要
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 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.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1993年第2期287-291,共5页
Chemical Journal of Chinese Universities
基金
国家教育委员会博士点基金
中山大学科研基金
关键词
偕胺肟基
氧化还原
海绵金
螯合纤维
金
吸附
Amidoxime group, Au3+ ion, Chelation, Oxidation-reduction, Spongy gold
