Hydrocinnamaldehyde and phenylacetylene have been hydrogenated over Pt and Pt-Sn catalysts. The Pt-Sn system has been studied as a function of the Pt/Sn ratio. In the hydrogénation of the CC triple bond, addition of tin to platinum causes a sharp decrease in the rate of reaction. In the hydrogénation of the CO group, an increase is instead observed at lower tin contents with a subsequent decrease at the higher Sn/Pt ratios. These results are discussed in terms of: (a) an interaction between tin and platinum which deactivates the active metal sites and (b) an interaction between hydrocinnamaldehyde and tin ions which enhances the reactivity of the CO group
Liquid phase hydrogenation over platinum-tin catalysts
GALVAGNO, Signorino;NERI, Giovanni;
1986-01-01
Abstract
Hydrocinnamaldehyde and phenylacetylene have been hydrogenated over Pt and Pt-Sn catalysts. The Pt-Sn system has been studied as a function of the Pt/Sn ratio. In the hydrogénation of the CC triple bond, addition of tin to platinum causes a sharp decrease in the rate of reaction. In the hydrogénation of the CO group, an increase is instead observed at lower tin contents with a subsequent decrease at the higher Sn/Pt ratios. These results are discussed in terms of: (a) an interaction between tin and platinum which deactivates the active metal sites and (b) an interaction between hydrocinnamaldehyde and tin ions which enhances the reactivity of the CO groupPubblicazioni consigliate
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