Study on the Catalytic Oxidation of HCHO at Different Surface Area over Supported Pt/CeO_2 Catalysts

In order to study the activity of formaldehyde oxidation,Different Surface area over Supported Pt/CeO2 catalysts were prepared by sol-gel methods and tested for HCHO oxidation,compared to Pt/SiO2 catalyst.We found that the reactivity of formaldehyde oxidation were influenced by the properties of the supports.We also founded that the specific surface area of CeO2 also influence the catalytic properties of Pt/CeO2 catalyst.A catalyst with 38 m2/g specific surface area has the highest activity,due to the stronger interaction between metal and carrier and the higher concentration of oxygen vacancies.