Spektroskopische Untersuchungen an XCH2(CH3)2SiF-Verbindungen

Mössbauer-spectrometric and Catalytic Investigations of the System Pt? Sn? η-Al₂O₃ Tin compounds on an Al₂O₃-carrier exhibit interactions with the carrier, their chemical properties are different from those of the carrier-free compounds. In reduced Pt? Sn? Al₂O₃ catalysts of different preparation there are different interactions between platinum and tin. Impregnation of the carrier with platinum-tin complexes gives vicinal locations of both compounds in socalled Pt? Sn ensembles. The modification of the electronic properties of a part of the platinum by tin in Pt? Sn? Al₂O₃ catalysts causes a decrease of the adsorption of hydrogen and of the activity in the dehydrogenation of cyclohexane, and an increase of the activity of dehydrocyclization of n-heptane.