Effects of Additive on Pd/Ceo2 for Complete Oxidation of Toluene

VOCs exhausts have high volatile, high diffusivity and harmful for human body, therefore, how to reducing the amount of VOCs contamination is an important issue for environment protection. Catalytic oxidation is an effective way for treating the emissions of VOCs. Supported noble metal catalysts have been known as highly active catalysts for oxidation of hydrocarbons and have been preferentially used in commercial practices. The purpose of this study is to develop a Pd based catalyst which is highly active and cost-effective for VOCs oxidation.In this study, a series of Pd/CeO2、Pd/CuO-CeO2、Pd/MnOx-CeO2 catalysts with different metal additives will be prepared by incipient-wetness impregnation method and co-precipitation method. The samples will be characterized by powder X-ray diffraction (XRD), N2-sorption, transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy XPS and H2-TPR techniques. The catalysts will be tested for total oxidation of toluene with GHSV=10,000h-1.