Abstract
Highly dispersed platinum was found in Pt-Sn/Al2O3 catalysts prepared by the sol-gel method, i.e., cogelation of aluminum tri-sec-butoxide and tetrabutyltin and subsequent impregnation with hexachloroplatinic acid. X-ray diffraction studies showed that the cell parameter of pure platinum is not modified in bimetallic Pt-Sn samples. Moreover, energy dispersive X-ray analysis studies (EDX) showed that platinum, but not tin, was detected in the catalysts where tin was incorporated by the sol-gel coprecipitation of tin and aluminum. Incorporation of tin into the alumina network is suggested.
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Gomez, R., Bertin, V., Bosch, P. et al. Pt-Sn/Al2O3 sol-gel catalysts: Metallic phase characterization. Catal Lett 21, 309–320 (1993). https://doi.org/10.1007/BF00769483
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DOI: https://doi.org/10.1007/BF00769483