Zinc oxide was prepared by the combustion method.ZnO/CeO2 composite oxides were synthesized by the precipitation method with zinc oxide as the coated object.The samples were characterized by XRD

SEM

IR

TG-DTA

UV-Vis and TEM.ZnO was coated by CeO2 and composite oxides were formed.The composite oxides were modified with modifier reagent

and modification effect was evaluated by the degree of oil-affinity.The type of modifier

mass ratio of modifier

reaction temperature and pH value of solution were studied.The optimal reaction conditions were as follows:modifier stearate

temperature 60℃

mass ratio of modifier 4% of composite oxides

pH value of solution 7.Particle size became smaller

dispersion of samples was better and the degree of oil-affinity of sample was improved after the samples were modified.