Alumina pillared clays (Al-PILC) were impregnated with Ce and Pd, and then studied as catalysts in the deep oxidation of benzene of low concentration (130–160 ppm). The influence of synthesis conditions on pore structure of Al-PILC was investigated, and also the relationship between structure of the supports and catalytic properties in benzene oxidation of the catalysts was studied.
The optimized structure of the supports can strengthen the interaction between CeO2 and Al-PILC, improve the dispersion of Pd particles and increase the active sites, which enhances the catalytic activity of catalysts for the deep oxidation of low concentration of benzene.