The Kinetics of Cobalt Extraction with Extractant 5709

李洲; 阎长明

您当前的位置：

首页 >

文章列表页 >

The Kinetics of Cobalt Extraction with Extractant 5709

更新时间：2025-12-16

- The Kinetics of Cobalt Extraction with Extractant 5709
- CIESC Journal Issue 2, (1991)
- 作者机构：
  
  清华大学化工系,清华大学化工系 ,北京,北京
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 April 1991，
  
  Published：25 April 1991
- 稿件说明：
移动端阅览
李洲, 阎长明. The Kinetics of Cobalt Extraction with Extractant 5709[J]. CIESC Journal, 1991, (2).
DOI：

李洲, 阎长明. The Kinetics of Cobalt Extraction with Extractant 5709[J]. CIESC Journal, 1991, (2). DOI：

摘要

采用改进的恒界面池进行了异已基膦酸(1-甲基-庚基)酯(国内代号5709)-庚烷体系从硫酸介质中萃取钴(Ⅱ)的动力学研究.以组分活度代替浓度处理实验数据对有关参数进行了关联

并建立了相应的数学模型(?)=1.435×10~(-3)(a_c_o)-b[(a_(HA)_2)_b]~(1/2)·N~(1/2)/2.55×10~3(a_(H)_b·N~(1/2)+[(a_(HA)_2)_b]~(1/2)实验结果表明

5709萃取钴(Ⅱ)动力学的过程控制为混合控制机制

即为水相中钴离子的扩散和相界面钴的1—2络合物生成的化学反应为主要控制步骤.在水相pH值较高时

控制步骤以前者为主导;在水相pH值较低时

则以后者为主要控制步骤.

Abstract

The kinetics of cobalt extraction with extractant 5709 (Hexyl-phosphonicAcid Mono-1-Methylheptyl Ester )-Heptane-CoSO4-H2SO4 system was studied with a modified constant interface cell. The extraction kinetics was found to be a mixed controlling regime

i. e.

diffusion of cobalt in aqueous phase and chemical reaction of the diffusion of 1 - 2 complex of cobalt at the interface. At higher pH

diffusion was the dominant step

at lower pH

the formation of complex was the dominant step. A mathematic model was established as follows: The apparent activation energy E thus calculated as 8.57 kcal/mol

also sup-ported the mixed controlling regime oi the extraction kinetics ot cobalt.

关键词

Keywords

references

Views

148

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Controlled synthesis of Bi2MoO6/MoO3 composite fibers via in-situ hydrothermal method and their high-efficiency photocatalytic hydrogen production performance

Oxygen mass transfer performance of hollow fiber non-bubble aeration membrane based on gas/liquid-phase measurement method

Prediction of biomass pyrolysis product yield based on machine learning algorithms

Hydrolysis reaction mechanism of CNCl on the surface of composite metal CuCr2O4

Prediction model for COD in petrochemical wastewater influent based on temporal-spatial dual-stream convolutional neural network

Related Author

No data

Related Institution

No data

⁰