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化学学报
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化学学报 ›› 1981, Vol. 39 ›› Issue (2): 185-191. 上一篇    

研究简报

碱式碳酸锌对[UO2(CO3)3]4-吸附机理的研究

韩建成   

  1. 华东师范大学化学系海水资源化学研究室 上海
  • 投稿日期:1979-02-22 发布日期:2013-06-03

A STUDY ON THE MECHANISM OF ADSORPTION OF URANYL TRICARBONATE IONS BY ZINC HYDROXIDE CARBONATE

HAN JIAN-CHENG   

  1. The Research Group on Resources from Sea Water, Department of Chemistry, Eastern China Normal University, Shanghai
  • Received:1979-02-22 Published:2013-06-03

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用吸附法从海水中提铀的研究已引起了广泛的注意,碱式碳酸锌则是常用的吸附材料之一。本文报道用碱式碳酸锌对[UO2(CO3)3]4-吸附机理的研究结果。从不同碱度的碱式碳酸锌吸附[UO2(CO3)4]4-中铀的实验,得出在一定的—OH浓度范围内,碱式碳酸锌中—OH含量越高,对[UO2(CO2)3]4-中铀吸附率越大的结果。同时使用X射线衍射法与红外光谱法,亦对吸附机理进行了初步研究,由此扩大了研制新吸附剂的线索。

X-ray diffraction and infrared spectroscopy were used to study the mechanism of adsorption of uranyl tricarbonate ions by zinc hydroxide carbonate.The conclusions are as follows: (1) the adsorption of sodium uranyl tricarbonate by zinc hydroxide carbonate is a chemical process with the formation of a new compound,as the X-ray diffration pattern of the product is different from either that of zinc hydroxide carbonate or that of sodium uranyl tricarbonate.The new compound diffracts Cu-Kα radiation at 2θ=18.2°,22.43° and 31.9°,and the most intensive diffraction peak is at 2θ=22.43°;(2) the adsorbability increases with the relative concentration of -OH in zinc hydroxide carbonate; (3) after the adsorption of [UO2 (CO3)3]4-by zinc hydroxide carbonate,the concentration of -OH in the adsorbent decreases.