Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.1/7398
Título: Liquid-Liquid Extraction of Platinum from Chloride Media byN,N′-Dimethyl-N,N′-Dicyclohexyltetradecylmalonamide
Autor: Costa, Maria Clara
Assunção, Ana
Costa, Ana M. Rosa da
Nogueira, Carlos
Paiva, Ana Paula
Palavras-chave: Platinum
Malonamide derivatives
Liquid-liquid extraction
Hydrochloric acid
Data: 2013
Editora: Taylor & Francis
Citação: Solvent Extr Ion Exc, 31: 12–23, 2013
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).
Peer review: yes
URI: http://hdl.handle.net/10400.1/7398
DOI: 10.1080/07366299.2012.700588
ISSN: 0736-6299
Versão do Editor: http://www.tandfonline.com/doi/full/10.1080/07366299.2012.700588
Aparece nas colecções:FCT2-Artigos (em revistas ou actas indexadas)

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