Composite catalyst for synthesizing dimethyl carbonate and preparation method of dimethyl carbonate

The present invention discloses a catalyst composite for dimethyl carbonate synthesis, which is characterized in that: in an ordered array of nano-structure oxide of the substrate, by the sol - gel method the catalytically active component loaded on an oxide substrate nanoarray ; wherein said display is a nano-aluminum, zinc, titanium, or silicon oxide nano-array; the active component H3PW12O40 / CexTi1-xO2 catalysts, organotin catalysts, the titanium alkoxide compound, copper-nickel alloy, a basic catalyst and nickel, cobalt, manganese acetate catalyst of one, wherein X is 0.1-0.9. Structural order, good catalytic effect. The present invention further provides a method of synthesizing the composite carbonate by dimethyl catalyst.