Pyridinethiol-Assisted Dissolution of Elemental Gold in Organic Solutions

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dc.contributor University of Helsinki, Department of Chemistry en
dc.contributor University of Helsinki, Department of Chemistry en
dc.contributor University of Helsinki, Department of Chemistry en
dc.contributor University of Helsinki, University of California en
dc.contributor University of Helsinki, Department of Chemistry en
dc.contributor University of Helsinki, Department of Chemistry en
dc.contributor University of Helsinki, Department of Chemistry en
dc.contributor University of Helsinki, Department of Chemistry en
dc.contributor University of Helsinki, Department of Chemistry en
dc.contributor University of Helsinki, Department of Chemistry en
dc.contributor University of Helsinki, Department of Chemistry en
dc.contributor.author Räisänen, Minna
dc.contributor.author Heliövaara, Eeva
dc.contributor.author Al-Qaisi, Feda'a
dc.contributor.author Muuronen, Mikko
dc.contributor.author Eronen, Aleksi
dc.contributor.author Liljeqvist, Henri
dc.contributor.author Nieger, Martin
dc.contributor.author Kemell, Marianna
dc.contributor.author Moslova, Karina
dc.contributor.author Hämäläinen, Jani
dc.contributor.author Lagerblom, Kalle
dc.contributor.author Repo, Timo
dc.date.accessioned 2021-01-18T15:03:01Z
dc.date.available 2021-01-18T15:03:01Z
dc.date.issued 2018-12-21
dc.identifier.citation Räisänen , M , Heliövaara , E , Al-Qaisi , F , Muuronen , M , Eronen , A , Liljeqvist , H , Nieger , M , Kemell , M , Moslova , K , Hämäläinen , J , Lagerblom , K & Repo , T 2018 , ' Pyridinethiol-Assisted Dissolution of Elemental Gold in Organic Solutions ' , Angewandte Chemie (International Edition) , vol. 57 , no. 52 , pp. 17104-17109 . https://doi.org/10.1002/anie.201810447 en
dc.identifier.issn 1433-7851
dc.identifier.other PURE: 121346073
dc.identifier.other PURE UUID: 2d69850d-3730-4f62-98a3-9660dc056569
dc.identifier.other WOS: 000454575500028
dc.identifier.other ORCID: /0000-0002-3116-6199/work/52857128
dc.identifier.other ORCID: /0000-0002-3583-2064/work/52858838
dc.identifier.other Scopus: 85057324796
dc.identifier.other ORCID: /0000-0003-2103-4675/work/52864861
dc.identifier.other ORCID: /0000-0002-2903-1199/work/52866860
dc.identifier.other ORCID: /0000-0001-8470-8302/work/58742282
dc.identifier.other ORCID: /0000-0003-1677-0109/work/52857884
dc.identifier.uri http://hdl.handle.net/10138/324826
dc.description.abstract Dissolution of elemental gold in organic solutions is a contemporary approach to lower the environmental burden associated with gold recycling. Herein, we describe fundamental studies on a highly efficient method for the dissolution of elemental Au that is based on DMF solutions containing pyridine-4-thiol (4-PSH) as a reactive ligand and hydrogen peroxide as an oxidant. Dissolution of Au proceeds through several elementary steps: isomerization of 4-PSH to pyridine-4-thione (4-PS), coordination with Au-0, and then oxidation of the Au-0 thione species to Au-I simultaneously with oxidation of free pyridine thione to elemental sulfur and further to sulfuric acid. The final dissolution product is a Au-I complex bearing two 4-PS ligands and SO42- as a counterion. The ligand is crucial as it assists the oxidation process and stabilizes and solubilizes the formed Au cations. en
dc.format.extent 6
dc.language.iso eng
dc.relation.ispartof Angewandte Chemie (International Edition)
dc.rights en
dc.subject desulfurization en
dc.subject gold en
dc.subject gold recycling en
dc.subject pyridinethiol en
dc.subject reaction mechanisms en
dc.subject SELECTIVE RECOVERY en
dc.subject POWERFUL REAGENTS en
dc.subject OXIDATION en
dc.subject 116 Chemical sciences en
dc.title Pyridinethiol-Assisted Dissolution of Elemental Gold in Organic Solutions en
dc.type Article
dc.description.version Peer reviewed
dc.identifier.doi https://doi.org/10.1002/anie.201810447
dc.type.uri info:eu-repo/semantics/other
dc.type.uri info:eu-repo/semantics/acceptedVersion
dc.contributor.pbl
dc.contributor.pbl

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