A comparison among (2-ethylhexyl)-mono (2-ethylhexyl) ester Phosphonic acid (P507), Secondary-octyl phenoxy acetic acid (CA-12) and Bis(2, 4, 4-trimethylpentyl) phosphinic acid (Cyanex272), in heavy rare earths separation via hydrometallurgical processes has been investigated. The separation coefficients, β, were obtained and the extraction selectivity has been evaluated using a mixture of heavy rare earths from Samarium to Ytterbium. The experimental results indicated that P507 and Cyanex 272 display a greater affinity for heavier rare earths while CA12 proved to be more effective for the lighter rare earth metals.

Comparison among different extractants, AS (2-ethylhexyl)-mono (2-ethylhexyl) ester phosphonic acid (p507), secondary-octyl phenoxy acetic acid (CA-12) and BIS(2, 4, 4-trimethylpentyl)phosphinic acid (CYANEX272), in the separation of heavy rare earths via hydrometallurgical processes

Morgana, M.;Garzone, P.;Devincenzis, G.;Blasi, A.;Sposato, C.
2014

Abstract

A comparison among (2-ethylhexyl)-mono (2-ethylhexyl) ester Phosphonic acid (P507), Secondary-octyl phenoxy acetic acid (CA-12) and Bis(2, 4, 4-trimethylpentyl) phosphinic acid (Cyanex272), in heavy rare earths separation via hydrometallurgical processes has been investigated. The separation coefficients, β, were obtained and the extraction selectivity has been evaluated using a mixture of heavy rare earths from Samarium to Ytterbium. The experimental results indicated that P507 and Cyanex 272 display a greater affinity for heavier rare earths while CA12 proved to be more effective for the lighter rare earth metals.
9781118888827
CA-12;Heavy Rare Earths;Separation;P507;Cyanex 272
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.12079/4336
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