高等学校化学学报

高等学校化学学报 ›› 1988, Vol. 9 ›› Issue (8): 823.

• 论文 • 上一篇    下一篇

金的离子交换与吸附化学(Ⅱ)——大孔交联聚甲基丙烯酸酯MET-802对金的吸附平衡和柱穿透

陈景仁1, 邱陵1, 常征1, 林雪2, 何炳林2   

  1. 1. 兰州大学现代物理系;
    2. 南开大学化学系
  • 收稿日期:1987-02-04 出版日期:1988-08-24 发布日期:1988-08-24
  • 通讯作者: 陈景仁

Chemistry of Ion Exchange and Adsorption of Gold(Ⅱ)——Adsorption Equilibrium and Breackthrough Process of AuCI4- on the Macroporous Crosslinked Polyacrylate Resin MET-802

Chen Jingren1, Qiu Ling1, Chang Zheng1, Lin Xue2, He Binglin2   

  1. 1. Department of Modern Physios, Lanzhou University, Lanzhou;
    2. Department of Chemisitry, Nanhai University, Tianjin
  • Received:1987-02-04 Online:1988-08-24 Published:1988-08-24

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摘要： 研究了盐酸溶液中AuCl4-在MET-802(相当于AmberliteXAD-7)树脂上的吸附平衡和柱穿透过程。测算出0.25～1.00mol/L盐酸范围内AuCl4-对Cl-的选择系数,确认AuCl41在柱穿透时的传质为液膜扩散主控,液膜厚度6=5.8×10-2(v)-0.65,与AuCl4-的浓度及树脂粒度无关,HETP服从Snyder方程h=1.8×102γ0(v)0.35。

关键词: 金的离子交换与吸附, 吸附平衡, 柱穿透

Abstract: The adsorption equilibrium and breackthrough process of AuCl4- in the medium of hydrochloric acid on MET-802 (corresponding to Amberlite XAD-7) has been studied.In the range of 0.25mol/L~1.00mol/L HCl the selectivity coefficients of AuCl4- to Cl- have been calculated from the experimental values. It has been confirmed that transfer of AuCl4- in the breackthrough process is main-controlled by the film diffusion process.The thickness of film δ= 5.8×10-2 (v)-0.65, which is independent of both the concentration of AuCl4- and the size of the resin. HETPis followed by Snyder equations h= 1.8 ×102(v)0.35 .

Key words: Ion exchange and adsorption of gold, Adsorption equilium, Breackthrough process

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