Extraction of praseodymium(Ⅲ) and neodymium(Ⅲ) in saponified P507-HCl-kerosene system

LIU Jing; WANG Yundong

doi:10.3969/j.issn.0438-1157.2014.01.034

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Extraction of praseodymium(Ⅲ) and neodymium(Ⅲ) in saponified P507-HCl-kerosene system

更新时间：2025-12-10

- Extraction of praseodymium(Ⅲ) and neodymium(Ⅲ) in saponified P507-HCl-kerosene system
- CIESC Journal Issue 1, Pages: 264-270(2014)
- 作者机构：
  
  清华大学化学工程系, 化学工程联合国家重点实验室,北京,100084
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.01.034
  CLC： F845+.6
- Online First：05 January 2014，
  
  Published：05 January 2014
- 稿件说明：
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LIU Jing, WANG Yundong. Extraction of praseodymium(Ⅲ) and neodymium(Ⅲ) in saponified P507-HCl-kerosene system[J]. CIESC Journal, 2014, (1): 264-270.
DOI：

LIU Jing, WANG Yundong. Extraction of praseodymium(Ⅲ) and neodymium(Ⅲ) in saponified P507-HCl-kerosene system[J]. CIESC Journal, 2014, (1): 264-270. DOI： 10.3969/j.issn.0438-1157.2014.01.034.

摘要

通过平衡实验考察了皂化P507-HCl-煤油体系中初始水相pH、萃取剂P507皂化度以及P507浓度对单一稀土元素萃取和镨（Pr）钕（Nd）双元素萃取平衡的影响，确定皂化反应产物组成和最佳分离条件，并于最佳分离条件下在膜分散微萃取器中分离镨（Pr）钕（Nd）。结果表明，利用膜分散微萃取器萃取分离镨（Pr）钕（Nd）的萃取率和有效分离因子可与平衡实验相当，在膜分散微萃取器中反应时间大大缩短至2.5 s左右，提高了传质速率。

Abstract

The effect of initial aqueous pH

concentration of P507 and saponification degree of P507 was investigated for P507-HCl-kerosene system

not only for individual rare earth elements

but also for both praseodymium(Ⅲ) and neodymium(Ⅲ). Extraction in a membrane dispersion micro-extractor was performed after determining the product formed by saponification reaction and optimized separation conditions. Using membrane dispersion micro-extractor could increase mass transfer rate and shorten reaction time to 2.5 s with similar extraction rate and separation factor achieved by shake flask tests.

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