A catalyst for directly synthesizing dimethyl carbonate and a method for preparing the same

Abstract

The application provides a catalyst for directly synthesizing dimethyl carbonate and a preparation method thereof, and belongs to the technical field of catalysts for chemical synthesis; the catalyst comprises 90-98% of nitrate in terms of mass percentage, 0.1-1% of a surfactant, and the rest is urea; the nitrate is cerium nitrate, lanthanum nitrate or zirconium nitrate; the catalyst precursor is prepared by using cerium nitrate, and then lanthanum nitrate and zirconium nitrate are used for impregnation treatment in sequence, so that the catalyst is obtained through calcination; the application can realize high-yield and high-selectivity catalytic preparation of DMC (dimethyl carbonate) from methanol, CO2 and 2-cyanopyridine; the catalytic efficiency of the catalyst can reach methanol single-pass conversion rate > 50% and DMC selectivity > 98%.