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化学学报
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化学学报 ›› 1990, Vol. 48 ›› Issue (1): 48-53. 上一篇    下一篇

研究论文

氧化铝自配合溶液中吸附Zn^2^+及SCN^-的初探

杨春芬;何朝鼎   

  1. 云南大学化学系
  • 发布日期:1990-01-15

Adsorption study of Zn^2^+ cation and SCN^- anion from complex solution on alumina

YANG CHUNFEN;HE CHAODING   

  • Published:1990-01-15

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研究了在不同PH、浓度、时间、温度、离子强度和螯合剂的条件下, 用不同浓度的硝酸预处理的氧化铝吸附剂自锌(II)-硫氰酸根配合水溶液中吸附Zn^2^+及SCN^-的特性, 并与自简单锌盐、硫氰酸盐水溶液中的吸附特性相比较, 结果表明配合物体系中的吸附作用不同于非配合物体系, 除了主要以离子交换机理进行外, 还可能在氧化物/水界面上发生配位吸附作用。

关键词: 分光光度法, 锌, 氧化铝, 吸附, 离子交换, 硫氰酸根络合物, 离子强度, 溶液化学, 界面化学, 络合吸附波

The adsorption characteristics of Zn2+ cation and SCN- anion from the complex solution on g-alumina samples pretreated with nitric acid of different concns. were investigated. The effects of pH, concentration, time, temperature, ionic strength and chelating agents are investigated. The experimental results were interpreted by using a predominant ion-exchange mechanism. Both the surface hydrolytic action and the complexation may occur at the oxide/water interface.

Key words: SPECTROPHOTOMETRY, ZINC, ALUMINIUM OXIDE, ADSORPTION, ION EXCHANGING, THIOCYANATO COMPLEX, IONIC STRENGTH, SOLUTION CHEMISTRY, INTERFACE CHEMISTRY, ADSORPTIVE COMPLEX WAVE

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