Selective hydrogenation of cinnamaldehyde to cinnamyl alcohol over Co/diatomite catalysts

The preparation condition for Co-Fe/diatomite catalysts for selective hydrogenation of cinnamaldehyde to cinnamyl alcohol was studied and improvement of properties of the catalysts by preparation under ultrasonic irradiation was discussed. SEM, XRD and PLS results showed calcination temperature and reduction temperature had remarkable influence on properties of the catalysts, both on the crystalline structure and the carrier and the mutual functioning between the carrier and the catalys, with the optimal calcination temperature of 673 K and reduction temperature of 723 K. Preparation under ultrasound favored formation and dispersion of finer Co and Fe crystals and enhanced catalytic properties of the catalysts.