| D201×4树脂对金(III)的吸附 |
| Sorption of Au(III) on D201×4 Resin |
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| 摘要: |
| 关键词: D201×4树脂 金(III) 吸附 解吸 |
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| Abstract: Sorption behavior and mechanism of D201×4 resin for Au(III) were investigated. D201×4 resin has a good adsorptivity for Au(III) in HAc-NaAc medium at pH value of 2.63. The statically saturated Au(III) sorption capacity was 689.11 mg·g-1 resin. The Au(III) adsorbed on D201×4 resin could be eluted by 10%NH2CSNH2-1 mol·L-1 HCl(1∶1) and the elution rate was 92.2%.The adsorption of Au(III) on D201×4 follows the Freundlich isotherm. The ΔH of the adsorption was 11.03 kJ·mol-1. The sorption rate constant was 5.42×10-5 s-1. The activation energy was 13.26 kJ·mol-1. The molar coordination ratio of the functional group of D201×4 to Au(III) was about 1:1. The adsorption mechanism of resin for Au(III) was suggested according to chemical analysis and IR spectraoscopy results. |
| Keywords: D201×4 resin Au(Ⅲ) sorption elute |
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| 施林妹,莫建军.D201×4树脂对金(III)的吸附[J].无机化学学报,2007,23(5):911-914. |
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