Influence of tin(II) chloride on the solvent extraction of platinum group metals with N,N-di-n-hexyl-N'-benzoylthiourea

Long-Term Monitoring of Palladium and Platinum Contents in Road Dust of the City of Munich, Germany

“…N,N-Dialkyl-N'-benzoylthioureas fulfil all of these requirements and were first utilized for selective PGM enrichment in 1985 and 1986 (König et al 1985(König et al , 1986 followed by a series of investigations on the solvent extraction of PGM species (Vest et al 1989(Vest et al , 1991 and patents e.g. (König et al 1988(König et al , 1987.…”

Liquid Anion Exchange Chromatographic Extraction and Separation of Platinum (IV) with N-Octylaniline as an Metallurgical Reagent: Analysis of Real Samples

“…Important interfering elements in the extraction of platinum as Cu, Fe, Ni. Solvent extraction of platinum (IV) by N,N-dihexyl-N'-benzoyl-thiourea [37] in toluene is substantially accelerated in the presence of stannous chloride. The extraction behavior of platinum (II) is not affected by the treatment of stannous chloride.…”

A calorimetric study of N, N-diethyl-N′-furoylthiourea and N, N-diisobutyl-N′-furoylthiourea

“…Moreover, it is known that the nature of the acyl group and terminal nitrogen atom substituents are important to the coordination ability of the ligands. (4) Therefore, a systematic study of these type of molecules with different substituents has been carried and although a large number of papers (1)(2)(3)(4)(5)(6) have been devoted to the synthesis and physical properties of these kinds of ligands and their complexes, very few studies were published (7) on their thermochemical properties, either in the gaseous or condensed phases.…”

“…Acylchalcogenoureas are good chelating ligands due to there ability to act as selective complexing agents and so are widely used in analytical applications, (1) in heavy-metal hydrometallurgy, (2) in trace enrichment and in chromatographic separation of metals. (3) Its complexes are easily extracted by apolar solvents and separated by chromatographic techniques, allowing efficient yield even in low residual metal concentrations.…”