“Catalytic and structural characterization of surface basic sites on termally activated Mg-Al hydrotalcites”

VERÓNICA K. DÍEZ; CARLOS R. APESTEGUÍA; JUANA I. DI COSIMO

Chicago, Illinois, USA

Congreso; 15th. Meeting of the North American Catalysis Society; 1997

Thermally activated Mg-Al hydrotalcites (HT) promote a variety of base-catalyzed reactions, like aldol condensations.  However, it has been observed that the catalytic performance of these materials is strongly dependent on both the synthesis technique and the Mg/Al ratio.  In this paper, we have prepared and thoroughly characterized (structural purity, site density, and surface composition and properties) a set of ex-HT Mg-Al samples.  Our target was to establish the relationship between the catalyst surface basicity and the catalytic site structure for the aldol condensation of acetone.