Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.9/2020
Título: Liquid-Liquid Extraction of Platinum from Chloride Media by N,N'-Dimethyl-N,N'-Dicyclohexyltetradecylmalonamide
Autor: Costa, M. Clara
Assunção, Ana
Costa, Ana M. Rosa da
Nogueira, C. A.
Paiva, A. P.
Palavras-chave: Platinum
Malonamide derivatives
Liquid-liquid extraction
Hydrochloric Acid
Data: 2013
Editora: Taylor & Francis
Citação: Costa, M. Clara; Assunção, Ana; Costa, Ana M. R. da; Nogueira, C.A.; Paiva, A.P. Liquid-Liquid Extraction of Platinum from Chloride Media by N,N'-Dimethyl-N,N'-Dicyclohexyltetradecylmalonamide. In: Solvent Extraction and Ion Exchange, 2013, Vol. 31, nº 1, p. 12-23
Resumo: Liquid-liquid extraction of platinum(IV) from chloride media was carried out using N,N'-dimethyl-N,N'-dicyclohexyltetradecylmalonamide (DMDCHTDMA) in 1,2-dichloroethane. Platinum can be effectively extracted by DMDCHTDMA without addition of tin(II) chloride, since extraction percentages (%E) of 88% and 99% have been achieved from 6 M and 8 M HCl, respectively. Moreover, platinum can be successfully stripped through a simple contact with a 1 M HCl solution. The effect of some experimental parameters such as equilibration time, diluent, extractant and HCl concentrations was systematically investigated. The loading capacity of DMDCHTDMA was also evaluated. Data obtained from successive extraction-stripping cycles suggest a good stability pattern of DMDCHTDMA. Preliminary extraction data achieved with single metal ion solutions pointed out to a possible separation of platinum(IV) from palladium(II).
URI: http://hdl.handle.net/10400.9/2020
ISSN: 0736-6299
Versão do Editor: http://dx.doi.org/10.1080/07366299.2012.700588
Aparece nas colecções:UEE - Artigos em revistas internacionais

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