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- Title
Thermal Decomposition of Dibutyltin(IV) Sulphide Supported on α-Al<sub>2</sub>O<sub>3</sub>.
- Authors
Coelho, M. G.; De Lima, G. M.; Porto, A. O.; De Oliveira, L. S.; Ardisson, J. D.
- Abstract
In this paper we report the preparation of tin sulphides on the surface of α-Al2O3. The starting material was prepared by a mixture of dibutyltin(IV) sulphide dissolved in ethanol with a suspension of alumina in the same solvent. The residues were obtained after removing the solvent and subsequent pyrolysis of the supported product. The samples were prepared in order to have, after pyrolysis, ratios of Sn/a-Al203 of 5% (1), 10% (2), 15% (3), 30% (4), 40% (5) and 60% (6) in weight. The X-ray powder diffraction results were not conclusive since lines of some phases of SnS, SnS2, Sn2S3 and Sn3S4 are too close one to another. However, 119Sn Mössbauer experiments suggest that SnS2 is formed at first, and then Sn2S3 and finally Sn3S4, as the Sn(IV) concentration increases. Scanning electron microscopy (SEM) revealed that crystals of tin sulphides have grown on the surface of big crystals of α-Al2O3. Finally, X-ray electron probe microanalyses (EPMA) shows the presence of AI, O, S and Sn in all samples.
- Publication
Main Group Metal Chemistry, 2005, Vol 28, Issue 4, p235
- ISSN
0792-1241
- Publication type
Article