Kinetics of the selective hydrogenation of 2,3-butanedione

NICOLÁS R. CARRARA; JUAN M. BADANO; NICOLÁS BERTERO; GERARDO TORRES; CECILIA R. LEDERHOS; LUCIANA MARTINEZ BOVIER; CAROLINA P. BETTI; AGNES MASTALIR; MÓNICA E. QUIROGA; CARLOS R. VERA

Lyon

Congreso; XIth European Congress on Catalysis; 2013

The reactions of selective hydrogenation of diketones enable the chemists to synthesize many fine chemical products. There are two possible products of hydrogenation of diketones: the
-hidroxyketone and the
,- alkanediol. Selective hydrogenation of 2,3-butanedione (diacetyl, DC) to 3-hidroxy-2-butanone (acetoin, AC) is an example of this type of reactions, the product being of special interest to the industry of flavours and fragrances. Our group has recently developed a special kind of support of mixed organic-inorganic nature that has been proved to have enhanced mechanical and chemical properties. These composites were employed for preparing Pd catalysts (0.3% loading). They were tested in the reaction of hydrogenation of 2,3-butanedione, acetoin being obtained as main product. A kinetic study was performed in order to get an insight into the underlying mechanism and to get information on the values of the reaction rate parameters.