Klaus R. KochTitle: Professor
Office: 1009 Mike de Vries Building
Phone: +27 (0)21 808-3020
Fax: +27 (0)21 808-3342
Background:
PhD, University of Cape Town, 1980
Research Emphasis:
Platinum NMR, Acylaroylthiourea chemistry, PGM chemistry
Research Summary:
Our research acknowledges the great importance of the Platinum Group Metals to South Africa as the world’s largest supplier of PGMs. Our mission is to contribute to fundamental new knowledge of the chemistry of the PGMs, and to develop the skills to meet the needs of this industry. We aim to establish a nationally and internationally recognized centre of expertise in this field.
Research Description:
- Design and synthesis of Platinum Group Metal (PGM) selective ligands and a study of their co-ordination of these metal ions in solution
- Design and synthesis of PGM-selective resins and a study of their application in recovery and selective pre-concentration methodology
- Application of high resolution multi-Nuclear Magnetic Resonance Spectroscopy in speciation, solution dynamics and structure elucidation of PGM complexes; Computations of chemical shifts of NMR active metal nuclei
- Speciation of metal complexes in solution chromatographic and other methods of separation of metal complexes
Chemometrics and errors in quantitative chemical measurements - Design and study of new biologically active complexes of PGMs
- New materials e.g. magnetic nano-particles and possible applications
Selected Publications:
- 195Pt NMR and advanced computational methods as tools towards the understanding of speciation and hydration/solvation of [PtX6]2- (X= Cl-, Br-) anions in solution. Klaus R Koch, M R Burger, J Kramer and A N Westra, Dalton Trans., 2006, 3277-3284. SPECIAL DALTON COVER DESIGN
- A 195Pt NMR study of the speciation and preferential extraction of Pt(IV)-mixed halide complexes by diethylenetriamine modified silica-based anion exchangers. Jurjen Kramer and Klaus R. Koch, Inorg. Chem., 2006 45(19), 7843-7855
- Magnetic nanoparticles: properties and applications, L. L. Vatta, K. R. Koch and R. D. Sanderson. Pure and Applied Chemistry, 79(9), 1791-1799, 2006
- An investigation into the potential large-scale continuous magnetite nanoparticle synthesis by high pressure impinging stream reactors. Laura L. Vatta, Ron D. Sanderson and Klaus R. Koch., J. Mag. Mag. Mat., (in press) 2006.
- N-(4-chlorobenzoyl)-N’,N’-diethylthiourea, Jean M McKenzie and Klaus R Koch, Acta Cryst., 2006, E62, o4263-o4264.
- Competitive bulk liquid membrane transport and solvent extraction of some transition and post-transition metal ions using acylthiourea ligands as ionophores. Michael M. Habtu Susan A. Bourne , Klaus R. Koch and Robert C. Luckay, New J Chem Research. 2006, 30, 1155-1162
- Diethylenetriamine functionalised silica coated magnetite nanoparticles for selective palladium ion extraction from aqueous solutions, Laura L. Vatta, Jurjen Kramer, and Klaus R. Koch, , Separation, Purification Technology (submitted), 2006.
- N-Pivaloyl-N',N'-di-n-butylthiourea, Jan Dillen, Mengistu Ghebreysus Woldu1, and Klaus R. Koch, Acta Cryst., (submitted) 2006.
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