SCI和EI收录∣中国化工学会会刊

›› 2014, Vol. 22 ›› Issue (10): 1174-1177.DOI: 10.1016/j.cjche.2014.09.010

• 研究简报 • 上一篇    

Extraction Kinetics of Lanthanum in Chloride Medium by Bifunctional Ionic Liquid [A336][CA-12] Using a Constant Interfacial Cellwith Laminar Flow

Hualing Yang1,2, Ji Chen1, WeiWang3, Hongmin Cui1, Dongli Zhang1, Yu Liu1   

  1. 1 State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
    2 School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China;
    3 Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, China Academy of Geological Sciences, Zhengzhou 450006, China
  • 收稿日期:2013-08-02 修回日期:2013-12-18 出版日期:2014-10-28 发布日期:2014-12-01
  • 通讯作者: Ji Chen
  • 基金资助:
    Supported by the National Natural Science Foundation of China (51174184), the National Basic Research Program of China (2012CBA01202), the Key Research Program of the Chinese Academy of Sciences (KGZD-EW-201-1), the Science and Technology Plan of Nantong City (BK2013030), the University Science Research Project of Jiangsu Province (14KJB150019), Open Subject of Changchun Institute of Applied Chemistry, Chinese Academy of Sciences (RERU2014016).

Extraction Kinetics of Lanthanum in Chloride Medium by Bifunctional Ionic Liquid [A336][CA-12] Using a Constant Interfacial Cellwith Laminar Flow

Hualing Yang1,2, Ji Chen1, WeiWang3, Hongmin Cui1, Dongli Zhang1, Yu Liu1   

  1. 1 State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
    2 School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China;
    3 Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, China Academy of Geological Sciences, Zhengzhou 450006, China
  • Received:2013-08-02 Revised:2013-12-18 Online:2014-10-28 Published:2014-12-01
  • Supported by:
    Supported by the National Natural Science Foundation of China (51174184), the National Basic Research Program of China (2012CBA01202), the Key Research Program of the Chinese Academy of Sciences (KGZD-EW-201-1), the Science and Technology Plan of Nantong City (BK2013030), the University Science Research Project of Jiangsu Province (14KJB150019), Open Subject of Changchun Institute of Applied Chemistry, Chinese Academy of Sciences (RERU2014016).

摘要: The extraction kinetics of La(Ⅲ) from aqueous chloride solutions into n-heptane solutions of bifunctional ionic liquid extractant [A336][CA-12] (tricaprylmethylammonium sec-octylphenoxy acetic acid) was investigated using a constant interfacial cell with laminar flow. The effects of stirring speed, temperature and specific interfacial area on the extraction rate were examined. The results indicate that mass transfer kinetics of La(Ⅲ) is a mixed-controlled process influenced by interfacial reaction. On the basis ofmass transfer kinetic results in the extraction of La(Ⅲ) by [A336][CA-12], the extraction rate equation of La(Ⅲ) is proposed in terms of pseudo-firstorder constants, which is supported by the measured thermodynamic equations. The mass-transfer kinetic model deduced from the rate controlling step is adequate to interpret the experimental data qualitatively.

关键词: Extraction kinetics, Bifunctional ionic liquid, Constant interfacial cell with laminar flow

Abstract: The extraction kinetics of La(Ⅲ) from aqueous chloride solutions into n-heptane solutions of bifunctional ionic liquid extractant [A336][CA-12] (tricaprylmethylammonium sec-octylphenoxy acetic acid) was investigated using a constant interfacial cell with laminar flow. The effects of stirring speed, temperature and specific interfacial area on the extraction rate were examined. The results indicate that mass transfer kinetics of La(Ⅲ) is a mixed-controlled process influenced by interfacial reaction. On the basis ofmass transfer kinetic results in the extraction of La(Ⅲ) by [A336][CA-12], the extraction rate equation of La(Ⅲ) is proposed in terms of pseudo-firstorder constants, which is supported by the measured thermodynamic equations. The mass-transfer kinetic model deduced from the rate controlling step is adequate to interpret the experimental data qualitatively.

Key words: Extraction kinetics, Bifunctional ionic liquid, Constant interfacial cell with laminar flow