The Saponification Extraction Process and Result Analysis of Rare Earth Organic Phase

Yan Mei; Zuo-Ren Nie

doi:10.4028/www.scientific.net/AMR.668.132

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 668The Saponification Extraction Process and Result...

The Saponification Extraction Process and Result Analysis of Rare Earth Organic Phase

Abstract:

10mol/L NaOH solution was used to saponify P507 (2-ethylhexylphosphonic acid mono-2-ethylhexyl ester) and then to extract and strip the rare earth cerium solution. The experimental procedure and results of the saponified organic phase and loaded organic phase were analyzed using IR spectrum and electrical conductivity meter. The results suggested the conductance value achieved highest when the saponified degree of alkaline solution was 60-80%, and the saponified organic phase formed a single-phase stable and uniform microemulsion. While the rare earth were extracted by P507, the IR absorption frequency of P=O decreased while the absorption intensity increased, suggesting that P=O group had been coordinated with the rare earth ions. More colloidal agglomerates in the loaded organic phase appeared when more rare earth was loaded.

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Advanced Materials Research (Volume 668)

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132-135

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https://doi.org/10.4028/www.scientific.net/AMR.668.132

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March 2013

Authors:

Yan Mei, Zuo-Ren Nie

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Analysis, Rare Earth Organic Phase, Saponification Extraction Process

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