高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (5): 639.

• 论文 • 上一篇    下一篇

BPR树脂对Au(Ⅰ)、Ag(Ⅰ)等氰合离子的离子交换与吸附研究(Ⅱ)——内扩散系数的测定及传质过程研究

甘尉棠, 刘彦明, 张毓凡   

  1. 南开大学化学系, 天津, 300071
  • 收稿日期:1991-04-01 出版日期:1992-05-24 发布日期:1992-05-24
  • 通讯作者: 甘尉棠

Studies on Ion Exchange and Adsorption of Au(Ⅰ), Ag(Ⅰ) and Other Metal Cyanide Anions by BPR Resin (Ⅱ) ——Determination of Intraparticle Diffusion Coefficient and Study on the Mass Transfer Process

GAN Wei-tang, LIU Yan-ming, ZHANG Yu-fan   

  1. Department of Chemistry, Nankai University, Tianjin, 300071
  • Received:1991-04-01 Online:1992-05-24 Published:1992-05-24

摘要: 测定了不同温度下Au(Ⅰ)、Ag(Ⅰ)、Ni(Ⅱ)、Cu(Ⅰ)、Fe(Ⅲ)氰合离子在Cl、NO3、OH型BPR树脂中的内扩散系数和扩散活化能,BPR树脂提取Au(Ⅰ)、Ag(Ⅰ)等氰合离子的机理为离子交换过程,并求得了几种氰合离子的活化熵差值(△S—△S)。

关键词: 浅床技术, BPR树脂, 金氰合离子, 粒子内扩散系数

Abstract: The intraparticle diffusion coefficient and activation energy of Au (Ⅰ), Ag (Ⅰ), Ni (Ⅰ), Fe(Ⅱ) cyanide anions were determined in Cl, NO3, OH-type BPRresin at different temperatures.It is found from the experimental results that the mechanism for extracting Au (Ⅰ), Ag(Ⅰ) and other metal cyanide anions by BPRresin belongs to ion exchange process.The difference of activation entropy of some metal cyanide anions (△S-△S) was evaluated.

Key words: Shallow bed technique, BPR resin, Aurocyanide anion, Intraparticle diffusion coef-ficient

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