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N,N′-tetrasubstituted succinamides as new molecules for liquid–liquid extraction of Pt(IV) from chloride media

2016Journal article Restricted
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dc.contributor.authorCosta, Maria Clara
dc.contributor.authorAlmeida, Ruben
dc.contributor.authorAssunção, Ana
dc.contributor.authorCosta, Ana M. Rosa da
dc.contributor.authorNogueira, Carlos
dc.contributor.authorPaiva, Ana Paula
dc.date.accessioned2016-01-06T18:04:38Z
dc.date.available2016-01-06T18:04:38Z
dc.date.issued2016
dc.description.abstractDue to the increasing demand of platinum group metals (PGM’s), among which platinum, the search for new alternatives aiming to their extraction and recovery is nowadays of great importance. Thus, two N, N0-tetrasubstituted succinamides, N,N0-dicyclohexyl-N,N0-dimethylsuccinamide (DMDCHSA) and N,N0- dimethyl-N,N0-diphenylsuccinamide (DMDPHSA) were synthesized and investigated, for the first time, as potential molecules for the liquid–liquid extraction of Pt(IV) from chloride solutions. According to the extraction and stripping results obtained in a single contact, these succinamides can be considered promising extractants for the recovery of platinum(IV) from hydrochloric acid media, since DMDCHSA is able to extract more than 95% Pt(IV) from 4 M HCl or higher concentrations, and DMDPHSA extracts 80% and 92% Pt(IV) from 6 M and 8 M HCl solutions, respectively. Furthermore, platinum(IV) can successfully be stripped through a simple contact with seawater: 93% Pt(IV) were recovered from DMDCHSA, while 60% stripping were obtained from DMDPHSA. For each compound, the time necessary to reach equilibrium, and the effects of the type of diluent and different extractant concentrations on the Pt(IV) extraction percentage were investigated. The loading capacity of DMDCHSA and DMDPHSA toward Pt (IV) was also evaluated, and the results show that both extractants present a very high loading capacity. In addition, data obtained from successive extraction-stripping cycles suggest a good stability pattern for both succinamides.pt_PT
dc.identifier.citationSeparation and Purification Technology 158 (2016) 409–416pt_PT
dc.identifier.doihttp://dx.doi.org/10.1016/j.seppur.2015.12.035pt_PT
dc.identifier.issn1383-5866
dc.identifier.otherAUT: AMC01695; MCO01181;
dc.identifier.urihttp://hdl.handle.net/10400.1/7393
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttp://ac.els-cdn.com/S1383586615304044/1-s2.0-S1383586615304044-main.pdf?_tid=fb165902-b2fd-11e5-b940-00000aab0f6c&acdnat=1451924141_d111275432550232df3db0cd61a336d9pt_PT
dc.subjectPlatinumpt_PT
dc.subjectSuccinamide derivativespt_PT
dc.subjectLiquid–liquid extractionpt_PT
dc.subjectHydrochloric acidpt_PT
dc.titleN,N′-tetrasubstituted succinamides as new molecules for liquid–liquid extraction of Pt(IV) from chloride mediapt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FQUI-QUI%2F109970%2F2009/PT
oaire.citation.endPage416pt_PT
oaire.citation.startPage409pt_PT
oaire.citation.titleSeparation and Purification Technologypt_PT
oaire.citation.volume158pt_PT
oaire.fundingStream3599-PPCDT
person.familyNameCosta
person.familyNameAssunção
person.familyNameRosa da Costa
person.givenNameMaria Clara
person.givenNameAna
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.orcid0000-0002-2519-2817
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-id18036433200
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.isAuthorOfPublication7b4d7528-ef19-45ae-af36-34b7b824c575
relation.isAuthorOfPublication0ca8c16f-6881-4662-bafc-cc51c5ce8d88
relation.isAuthorOfPublication.latestForDiscovery7b4d7528-ef19-45ae-af36-34b7b824c575
relation.isProjectOfPublicatione6818a69-8b2b-461c-b1d1-6b70bec8b2d7
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