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Catalysts based on CaO/MgAl oxides were prepared by Ca(NO3)2.4H2O impregnation onto MgAl hydrotalcite followed by calcination at 600°C/0.5h. The materials were characterized by means of XRD, N2 physisorption, FEG-SEM equipped with energy-dispersive X-ray spectroscopy (EDS) and TPD of CO2. The oxide reactivities were evaluated using the model transesterification reaction between methyl acetate and...
MgAl hydrotalcite was synthesized and used as support for Li impregnation. MgAlLi oxides were obtained from heat treatment of the Li/MgAl hydrotalcite. These materials were characterized and evaluated as catalysts for model transesterification reactions. MgAl showed negligible activity under mild reaction conditions (50 °C and 0.5 h) whereas Li incorporation greatly increased the activity. The activities...
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