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化学学报
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化学学报 ›› 1990, Vol. 48 ›› Issue (10): 982-987. 上一篇    下一篇

研究论文

二正辛基亚砜萃取钯(II)和金(III)的动力学研究

顾建胜;王汉章   

  1. 苏州大学化学系
  • 发布日期:1990-10-15

Kinetic studies on the extraction of palladium(II) and gold (III) with dioctyl sulfoxide

GU JIANSHENG;WANG HANZHANG   

  • Published:1990-10-15

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308

被引次数

11 | 5

应用连续自动测定的恒界面池装置, 研究了二正辛基亚砜(DOSO)在盐酸介质中萃取钯(II)和金(III)的动力学行为。得以了各自的萃取速率方程和表观活化能。测定了DOSO的两相分配和界面吸附性能。结果表明, DOSO萃取钯(II)为界面配本取代反应控制类型, 而萃取金(III)则为扩散或混合控制类型。

关键词: 金, 动力学, 萃取, 萃取平衡, 钯, 活化能, 亚砜 P

The extration kinetics of Pd(II) and Au(III) from HCl (1 mol.cm-3) medium with dioctyl sulfoxide (DOSO) were measured by useing a constant interfacial stirring cell which can measure the kinetic data continuously and automatically. The interfacial and distribution characteristics of DOSO as well as the influences of several parameters, such as stirring rate, concentration, temperature, and ratio between interfacial area and phase vol. on the rate of extration were studied. The results show that the extration is controlled kinetically by interfacial chem. reaction regime (for Pd) and by diffusion or chem. reaction-diffusion mixed regime (for Au) resp. The difference of extration kinetics between Pd(II) and Au(III) with DOSO was explained.

Key words: GOLD, DYNAMICS, EXTRACTION, EXTRACTION EQUILIBRIUM, PALLADIUM, ACTIVATION ENERGY, SULFOXIDE P

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