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Recovery of platinum and palladium from chloride solutions by a thiodiglycolamide derivative

2013Journal article Restricted
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dc.contributor.authorPaiva, Ana Paula
dc.contributor.authorCarvalho, Gonçalo Ivo
dc.contributor.authorCosta, Maria Clara
dc.contributor.authorCosta, Ana M. Rosa da
dc.contributor.authorNogueira, Carlos
dc.date.accessioned2016-01-06T14:43:54Z
dc.date.available2016-01-06T14:43:54Z
dc.date.issued2013
dc.description.abstractThe liquid-liquid extraction of platinum(IV) and palladium(II) from hydrochloric acid media was carried out using N,N’-dimethyl-N,N’-dicyclohexylthiodiglycolamide (DMDCHTDGA) in 1,2-dichloroethane (1,2-DCE). Pt(IV) is efficiently extracted from 5 M HCl onwards (%E ≥ 97%), whereas Pd(II) is quantitatively recovered from 1 to 8 M HCl solutions. Both Pt(IV) and Pd(II) can be successfully stripped from the loaded organic phases, the former with a 1 M HCl solution, the latter with 0.1 M thiourea in 1 M HCl. The maximum loading capacity of DMDCHTDGA for Pt(IV) could not be determined but it is high, since molar ratios extractant:Pt(IV) within 2 and 3 have been achieved. Data obtained from successive extraction-stripping cycles suggest a good stability profile of DMDCHTDGA towards Pt(IV) recovery. Attempts to replace 1,2-DCE by more environmentally-friendly diluents showed, in general, comparable %E for Pt(IV). The study of the influence of acidity, as well as chloride ion and DMDCHTDGA concentrations, allows a proposal for the composition of the Pt(IV) species formed upon extraction. Results obtained with binary metal ion solutions point out that Pt(IV) and Pd(II) can be efficiently separated from DMDCHTDGA loaded organic phases through sequential selective stripping.pt_PT
dc.identifier.citationSolvent Extr Ion Exc, 32 (2014) 78-94pt_PT
dc.identifier.doihttp://dx.doi.org/10.1080/07366299.2013.810969pt_PT
dc.identifier.issn0736-6299
dc.identifier.otherAUT: MCO01181; AMC01695;
dc.identifier.urihttp://hdl.handle.net/10400.1/7388
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherTaylor & Francispt_PT
dc.relation.publisherversionhttp://www.tandfonline.com/doi/full/10.1080/07366299.2013.810969pt_PT
dc.subjectPlatinumpt_PT
dc.subjectPalladiumpt_PT
dc.subjectThiodiglycolamide derivativept_PT
dc.subjectLiquid-liquid extractionpt_PT
dc.subjectHydrochloric acidpt_PT
dc.titleRecovery of platinum and palladium from chloride solutions by a thiodiglycolamide derivativept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FQUI-QUI%2F109970%2F2009/PT
oaire.citation.endPage94pt_PT
oaire.citation.issue1
oaire.citation.startPage78pt_PT
oaire.citation.titleSolvent Extraction and Ion Exchangept_PT
oaire.citation.volume32pt_PT
oaire.fundingStream3599-PPCDT
person.familyNameCosta
person.familyNameRosa da Costa
person.givenNameMaria Clara
person.givenNameAna M
person.identifier305029
person.identifier.ciencia-id7110-A28E-3C8A
person.identifier.ciencia-idA418-A85E-5DB1
person.identifier.orcid0000-0003-1340-5237
person.identifier.orcid0000-0003-0225-9537
person.identifier.ridM-6189-2013
person.identifier.ridE-2165-2012
person.identifier.scopus-author-id35354952400
person.identifier.scopus-author-id53986075100
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication11c29f10-6e2b-40d8-9c74-2cc45be6d7a7
relation.isAuthorOfPublication0ca8c16f-6881-4662-bafc-cc51c5ce8d88
relation.isAuthorOfPublication.latestForDiscovery0ca8c16f-6881-4662-bafc-cc51c5ce8d88
relation.isProjectOfPublicatione6818a69-8b2b-461c-b1d1-6b70bec8b2d7
relation.isProjectOfPublication.latestForDiscoverye6818a69-8b2b-461c-b1d1-6b70bec8b2d7

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