The transfer hydrogenolysis of glycerol promoted by palladium based catalysts is reported. The reactions were carried out under mild conditions (453 K and 5 bar of N2) in absence of added hydrogen by using the reaction solvent, 2-propanol, as hydrogen source. The catalytic results were interpreted in terms of metal (Pd)-metal (Co or Fe) interaction that modifies the electronic properties of palladium and affords bimetallic PdM sites (M = Co or Fe), thus enhancing the catalytic properties of the systems in the conversion of glycerol as well as in the selectivity to 1,2-propanediol and 1-propanol. The transfer hydrogenolysis mechanism is here elucidated and involves the glycerol dehydration to 1-hydroxyacetone and the subsequent hydrogenation of 1-hydroxyacetone to propylene glycol.

Exploring the catalytic properties of supported palladium catalysts in the transfer hydrogenolysis of glycerol

F. Mauriello
;
Maria Grazia Musolino;R. Pietropaolo;
2015

Abstract

The transfer hydrogenolysis of glycerol promoted by palladium based catalysts is reported. The reactions were carried out under mild conditions (453 K and 5 bar of N2) in absence of added hydrogen by using the reaction solvent, 2-propanol, as hydrogen source. The catalytic results were interpreted in terms of metal (Pd)-metal (Co or Fe) interaction that modifies the electronic properties of palladium and affords bimetallic PdM sites (M = Co or Fe), thus enhancing the catalytic properties of the systems in the conversion of glycerol as well as in the selectivity to 1,2-propanediol and 1-propanol. The transfer hydrogenolysis mechanism is here elucidated and involves the glycerol dehydration to 1-hydroxyacetone and the subsequent hydrogenation of 1-hydroxyacetone to propylene glycol.
Catalytic transfer hydrogenolysis (CTH); Glycerol valorization; 1,2-propanediol; Coprecipitated palladium catalysts; Storong metal support interaction
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12318/1083
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