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Selective extraction of palladium(II) from chloride solutions with nonylthiourea dissolved in chloroform
KTH, Superseded Departments, Materials Science and Engineering.
KTH, Superseded Departments, Chemistry.
KTH, Superseded Departments, Materials Science and Engineering.
2002 (English)In: Solvent extraction and ion exchange, ISSN 0736-6299, E-ISSN 1532-2262, Vol. 20, no 6, 717-733 p.Article in journal (Refereed) Published
Abstract [en]

The extraction of Palladium(II) [Pd(II)] from hydrochloric acid solutions with nonylthiourea (NTH) dissolved in chloroform at a constant ionic strength of LOM has been studied. The extraction of Pd(II) has been investigated as a function of the concentration of the extractant, chloride ion, and proton concentrations as well as extraction temperature. The distribution data have been treated graphically and numerically. The analysis of the experimental data has shown that Pd(II) is extracted as PdCl2 . (NTH) and PdCl2 . (NTH)(2) species with the respective extraction constants of log K-11 = 5.0 +/- 0.1 and log K-12 = 9.1 +/- 0.1. The back-extraction of Pd(II) from the organic phase using different stripping reagents has been examined. The selectivity of NTH for Pd(II) against Pt(IV), Rb(III), Cu(II), Fe(III), and Zn(II) has also been investigated.

Place, publisher, year, edition, pages
2002. Vol. 20, no 6, 717-733 p.
Keyword [en]
liquid-liquid-extraction, solvent-extraction, hydrochloric-acid, platinum metals, noble-metals, sulfide, gold, separation, thiourea, reagents
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-22108DOI: 10.1081/sei-120016075ISI: 000179678100006OAI: oai:DiVA.org:kth-22108DiVA: diva2:340806
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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