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Extraction of platinum(IV) with nonylthiourea dissolved in chloroform from hydrochloric acid media
KTH, Superseded Departments, Materials Science and Engineering.
KTH, Superseded Departments, Chemistry.
KTH, Superseded Departments, Materials Science and Engineering.
2003 (English)In: Solvent extraction and ion exchange, ISSN 0736-6299, E-ISSN 1532-2262, Vol. 21, no 6, 827-840 p.Article 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, 827-840 p.
Keyword [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: 000186740800004OAI: oai:DiVA.org:kth-22981DiVA: diva2:341679
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically 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. xvi, 50 p.
Keyword
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)91-7178-218-8 (ISBN)
Public defence
2006-03-17, Salongen, KTHB, Osquars backe 31, Stockholm, 10:00
Opponent
Supervisors
Note
QC 20100924Available from: 2006-03-08 Created: 2006-03-08 Last updated: 2010-09-24Bibliographically approved

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