INTRAMOLECULAR INTERACTIONS AND SELECTIVITY OF HYDROGENATION OF alpha , beta -UNSATURATED ALDEHYDES ON PLATINUM-GROUP METAL BLACKS.

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作者
Vozdvizhenskii, V.F. [1 ]
Pak, A.M. [1 ]
Sokol'skii, D.V. [1 ]
机构
[1] Acad of Sciences of the Kazak SSR, Alma-Ata, USSR, Acad of Sciences of the Kazak SSR, Alma-Ata, USSR
关键词
CATALYSTS - Platinum Compounds - SOLIDS - Surfaces;
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摘要
Citral, cinnamaldehyde, and forecyclamen aldehyde interact with the surface of rhodium, platinum, and palladium blacks through the double bond of the aldehyde. In the hydrogenation of these compounds, the direction of hydrogen addition is determined by the degree of conjugation of the -C equals C-C equals 0 bonds of the aldehyde. Therefore, when the structure of the surface complex is changed from eta -olefin to eta -diene, the probability of hydrogen transfer to the carbonyl group is increased, and the process is less selective.
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页码:528 / 532
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