Influence of base strength on the catalytic performance of nano-sized alkaline earth metal oxides supported on carbon nanofibers
Résumé
Nano-sized (3 nm) alkaline earth metal oxides supported on carbon
nanofibers were prepared by a facile impregnation and heat treatment
method of the corresponding nitrates. These supported catalysts showed a
significant improved activity for the aldol reaction and
transesterification compared to the respective bulk materials which did
not show any appreciable activity. A linear correlation was found
between the initial reaction rate and the strength of the basic sites as
determined by CO2 calorimetry indicating the importance of the base in
the rate determining step of the reactions. (C) 2013 Elsevier Inc. All
rights reserved.