纤维素螯合树脂的合成及其对金离子的提取

Synthesis of Cellulose-based Chelating Resins for Absorption of Gold Ions

利用废报纸中的纤维素与含双烯酮的苯 -正己烷混合溶液在 70℃下反应 1.5 h,制备含乙酸乙酰基团的螯合树脂。结果表明 ,在 p H=7.2 2的水溶液中 ,纤维素螯合树脂可以有效地吸附金离子达 90 %以上 。

The cellulose from waste newspaper was used in the preparation of a chelating resin containing acetoacetate groups by reacting cellulose with diketene in a mixed solution of benzene and nI-hexane at 70℃ for 1.5 hours. The results indicated that in aqueous solution of pH=7.22, the cellulose-based chelating resins have an absorption efficiency of gold ions more than 90% and they could be used repeatedly.