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.
The purpose of this research is to study the influence of synthesis conditions on pore structure of Al-PILC and the relationship between structure of the supports and catalytic properties in deep oxidation of benzene of low concentration.
In this work, the influence of synthesis conditions on pore structure of Al-PILC was investigated, and then the relationship between the structure of supports and catalytic properties in benzene oxidation of the catalysts was studied. XRD results show that the basal spacing is greatly enlarged after Al pillaring and doping with Ce on Al-PILC yielded a super structure. By N2 adsorption technique, it is found that synthesis conditions of Al-PILC have a significant impact on the surface area and Vmic, and loss in pore volume and Ames of Al-PILC is observed due to the doped Ce3+. H2-TPR profiles indicate that the peak (