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Extraction of platinum(IV) with nonylthiourea dissolved in chloroform from hydrochloric acid media
KTH, Superseded Departments (pre-2005), Materials Science and Engineering.ORCID iD: 0000-0001-6288-7709
KTH, Superseded Departments (pre-2005), Chemistry.
KTH, Superseded Departments (pre-2005), Materials Science and Engineering.ORCID iD: 0000-0003-4976-862X
2003 (English)In: Solvent extraction and ion exchange, ISSN 0736-6299, E-ISSN 1532-2262, Vol. 21, no 6, p. 827-840Article in journal (Refereed) Published
Abstract [en]

The extractant nonylthiourea (NTH) in chloroform has been investigated for the extraction of Pt(IV) from chloride solutions at ionic strength of I = 4.0 M and at 22degreesC. It has been found that chloride concentration has a negative effect on the extraction equilibrium, while proton concentration has no effect. The numerical analysis of the equilibrium data has shown that the extraction of PtCl62- with NTH can be interpreted by the formation Of PtCl4(NTH) and PtCl4(NTH)(4) species with their respective equilibrium constants of log K-11 = 5.06 +/- 0.01 and log K-14 = 14.12 +/- 0.04 in 4 M HCl. FTIR spectra of the free NTH and the NTH-Pt(IV) complex were studied to obtain some information on the interaction between Pt(IV) ions and NTH molecules.

Place, publisher, year, edition, pages
2003. Vol. 21, no 6, p. 827-840
Keywords [en]
di-ortho-tolylthiourea, solvent-extraction, group-metals, gold, complexes, thiourea, diphenylthiourea, derivatives, separation, palladium
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-22981DOI: 10.1081/sei-120025927ISI: 000186740800004Scopus ID: 2-s2.0-0347517471OAI: oai:DiVA.org:kth-22981DiVA, id: diva2:341679
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2022-10-24Bibliographically approved
In thesis
1. Selective Separation of Metal Ions by Solvent Extraction, Liquid Membranes and Magnetic Nanoparticles
Open this publication in new window or tab >>Selective Separation of Metal Ions by Solvent Extraction, Liquid Membranes and Magnetic Nanoparticles
2006 (English)Doctoral thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Stockholm: KTH, 2006. p. xvi, 50
Keywords
solvent extraction, facilitated transport, Pt(IV), Pd(II), Ph(III), permeation medelling, thermodynamic modelling
National Category
Materials Chemistry
Identifiers
urn:nbn:se:kth:diva-3871 (URN)91-7178-281-8 (ISBN)
Public defence
2006-03-17, Salongen, KTHB, Osquars backe 31, Stockholm, 10:00
Opponent
Supervisors
Note

QC 20100924

Available from: 2006-03-08 Created: 2006-03-08 Last updated: 2022-10-24Bibliographically approved

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