Extraction kinetics of uranium(Ⅵ) from nitric   acid solution by N-octanoylpiperidine

SHAO Hua  1  BAO Borong  1  HAN Jingtian  2  YANG Yonghui  3  SUN Sixiu  3  1

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Extraction kinetics of uranium(Ⅵ) from nitric acid solution by N-octanoylpiperidine

更新时间：2021-03-12

- Extraction kinetics of uranium(Ⅵ) from nitric acid solution by N-octanoylpiperidine
- NUCLEAR TECHNIQUES Issue 12, (2002)
- 作者机构：
  
  1. 中国科学院上海原子核研究所
  2. 滨州医学院基础教学部
  3. 山东大学化学化工学院
  5. ,济南,250100
- 作者简介：
- 基金信息：
- DOI：
  CLC： TL24
- Published：01 December 2002
- 稿件说明：
移动端阅览
[1]邵华,包伯荣,韩景田,杨永会,孙思修.辛酰哌啶萃取硝酸铀酰的动力学研究[J].核技术,2002(12):1051-1057.

SHAO Hua 1 BAO Borong 1 HAN Jingtian 2 YANG Yonghui 3 SUN Sixiu 3 1. Extraction kinetics of uranium(Ⅵ) from nitric acid solution by N-octanoylpiperidine[J]. Nuclear techniques, 2002, (12): 1051-1057.
[1]邵华,包伯荣,韩景田,杨永会,孙思修.辛酰哌啶萃取硝酸铀酰的动力学研究[J].核技术,2002(12):1051-1057. DOI：

SHAO Hua 1 BAO Borong 1 HAN Jingtian 2 YANG Yonghui 3 SUN Sixiu 3 1. Extraction kinetics of uranium(Ⅵ) from nitric acid solution by N-octanoylpiperidine[J]. Nuclear techniques, 2002, (12): 1051-1057. DOI：

摘要

利用恒界面池法研究了辛酰哌啶（OP）甲苯溶液从硝酸介质中萃取铀酰的动力学。结果发现在恒定扩散条件下

速控步骤为在界面区域靠近水相一边的萃合物的生成反应 :UO2 （NO3） ++OP·HNO3（i） =UO2 （NO3） 2 ·OP（i） +H+。正、逆向反应的活化能分别为 :E+a =3.2 0kJ/mol和E- a =2 6 .2 5kJ/mol

萃取反应的热效应为ΔH =- 2 3.0 5kJ/mol。萃取过程形成了UO2 （NO3） 2 ·（OP）和UO2 （NO3） 2 ·（OP） 2 两种萃合物

第二种萃合物的形成发生在有机相

Abstract

The extraction kinetics of uranium(Ⅵ) from nitric acid solution with N-octanoylpiperidine (OP) in toluene was investigated by means of stationary interface stirring cell. The experimental results show that the extraction process may be controlled by the following interface reaction: UO 2(NO 3) ++OP·HNO 3(i) =UO 2(NO 3) 2·OP (i) +H +. The effects of temperature

acidity and extractant concentration on the extraction rate were also discussed.

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Related Author

BAO Borong 1 SHAO Hua 2 HAN Jingtian 2 YANG Yonghui 3 SUN Sixiu 3 1

邵华

韩景田

杨永会

孙思修

WU Yan

NONG Shuying

ZHENG Jiawei

Related Institution

中国科学院上海原子核研究所

College of Science Shanghai University, Shanghai 200436) 2

School of Nuclear Science and Engineering, Shanghai Jiao Tong University

The Company Limited, China National Nuclear Corporation

State Key Laboratory of Pollutant Control and Resources Reuse,School of Environment,Nanjing University,Nanjing 210093,China) 2

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