Acidic Properties and Catalytic Activities of Sol–gel Derived Zn2SiO4

The ZnO–SiO2 binary oxides prepared by sol–gel method were calcined at various temperatures in order to reveal the relations between the surface properties as acid catalysts and the bulk structures. It was found that the catalytic activities and the acid amounts remarkably increased when the Zn2SiO4 phase was just formed by the calcination at 1173 K.