Recueil des Travaux Chimiques des Pays-Bas p. 426 - 430 (1994)
Update date:2022-08-11
Topics:
Pestman, R.
Koster, R. M.
Ponec, V.
As a model reaction for the selective hydrogenation of carboxylic acids towards aldehydes, the reaction of acetic acid towards acetaldehyde has been investigated.Various oxides are used as catalysts, including platinum-enriched oxides.It appeared that oxides with a moderate metal-oxygen bond strength are good catalysts, provided that a source of activated hydrogen is present.On exposure to molecular hydrogen zero-valent metals can produce activated hydrogen.Addition of precious metals, such as Pt, or completely reducing part of the oxidic catalyst can provide the zero-valent metal.The hydrogenation probably occurs on the oxidic surface by a Mars and Van Krevelen type of mechanism.
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