Ion exchange and adsorption chemistry of gold II: Adsorption and desorption kinetics of AuCl4^- on macroreticular polyacrylate resin MET-802

Acta Chimica Sinica ›› 1988, Vol. 46 ›› Issue (10): 945-951. Next Articles

Original Articles

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AuCl4^-的吸附及解吸动力学

邱陵;贾东方;原纪炳;林雪;何炳林

兰州大学现代物理系;南开大学化学系

发布日期:1988-10-15

Ion exchange and adsorption chemistry of gold II: Adsorption and desorption kinetics of AuCl4^- on macroreticular polyacrylate resin MET-802

QIU LING;JIA DONGFANG;YUAN JIBING;LIN XUE;HE BINGLIN

Published:1988-10-15

Abstract

The kinetics of adsorption and desorption of AuCl4- on macroreticular polyacrylate resin (analogous to Amberlite XAD-7) were studied. The rate determing step in both processes is film diffusion at the initial stage followed by particle diffusion. The effect of HCl concentration on the adsorption of AuCl4- is insignificant; the diffusion coefficient DAuCl4- = 4.4 ?10-8 cm-2 s-1 at 25?and adsorption activation energy DEa = -13.0 kJ mol-1. The desorption kinetics for the process using HCl-thiourea as desorption agent were studied. The relation between the liquid film diffusion constant R and the particle diffusion constant B with resin particle radius r0 follows the G. Boyd (1947) equation.

Key words: CHLORIDE, MACRORETICULAR STRUCTURE ION EXCHANGE RESINS, DESORPTION, POLYMETHACRYLATE, ADSORPTION KINETIC, GOLD COMPOUNDS

CLC Number:

O648

Cite this article

QIU LING;JIA DONGFANG;YUAN JIBING;LIN XUE;HE BINGLIN. Ion exchange and adsorption chemistry of gold II: Adsorption and desorption kinetics of AuCl4^- on macroreticular polyacrylate resin MET-802[J]. Acta Chimica Sinica, 1988, 46(10): 945-951.

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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AuCl4^-的吸附及解吸动力学

Ion exchange and adsorption chemistry of gold II: Adsorption and desorption kinetics of AuCl4^- on macroreticular polyacrylate resin MET-802

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