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Band Displacement Process with Redox Reactions for Uranium Isotope Separation by Chemical Exchange between U(IV)-Resin and U(VI)-Solution

 

作者: N. Pǎunescu,   A. Cǎluşaru,  

 

期刊: Isotopenpraxis Isotopes in Environmental and Health Studies  （Taylor Available online 1979）
卷期: Volume 15, issue 8  

页码: 233-235

 

ISSN:0021-1915

 

年代: 1979

 

DOI:10.1080/10256017908544336

 

出版商: Taylor & Francis Group

 

关键词: cations;ion exchange;isotope ratio;isotope separation;isotopie exchange;iron compounds;organic ion exchangers;redox process;titanium compounds;uranium 235;uranium 238;uranium compounds

 

数据来源: Taylor

 

摘要:

The extreme limits for235U/238U % at ambiant temperature were determined experimentally with a long time band displacement process (almost 1 year) using the isotope exchange reaction between U(IV)resinand U(VI)solution. These limits are 0.738 and 0.712, considering235U/238= 0.725% for natural uranium. The redox reactions, allowing the band displacement were: 1) in front of the band is the reduction of U(VI) in solution by a cathionic resin in Ti(III)-form; 2) in the tail of the band is the oxydation of U(IV) in resin by a solution containing Fe(III) ions.

 

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