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Citation: Liu jian, Wang Xiushan, Yang Zichao, Yan Jumei. SEPARATION OF W AND Mo BY CL-P507 EXTRACTION RESIN Ⅱ. ADSORPTION AND SEPARATION MECHANISM OF W AND Mo[J]. Chinese Journal of Applied Chemistry, ;1992, 9(1): 42-46. shu

SEPARATION OF W AND Mo BY CL-P507 EXTRACTION RESIN Ⅱ. ADSORPTION AND SEPARATION MECHANISM OF W AND Mo

1.
Department of Chemistry, Shaanxi Teacher's University, Xi'an 710062

Corresponding author: Wang Xiushan,
Received Date: 5 November 1990
Available Online: 30 March 1991

The adsorption and separation mechanism of Mo and W by Cl-P507 extraction resin have been investigated. The adsorption reaction enthalpies of the resin at 25 to 58℃ were determined as (ΔH=19.7kJ/mol) (for Mo), and (ΔH=4.18kJ/mol) (for W). The composition of extracted complex is MoO₂L₂ (HL=P507) as determined by the saturation and slope method. Based on the UV spectra and IR speetra, the adsorption mechanism for Mo is proved to be a cation exchange reaction:MoO₂²⁺+2HL=MoO₂L₂+2H⁺. The co-adsorption of W is a hydrogen bond association process.
- tungstun,
- molybdenum,
- mechanism,
- mono (ethyl hexyl)-ethyl hexyl phosphonate,
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