In order to explore the efficient and stable catalysts hydrogenation of dimethyl oxalate (DMO) to methyl glycolate (MG)

the Cu-Ni/SiO2 catalysts was prepared by hydrothermal synthesis method. The effect of different Cu and Ni mole ratio on catalytic activity was studied. By XRD

TEM and XPS characterization

the results show that the dispersion of copper and nickel species is more uniform by using silica microspheres as carriers. The ratio of Cu+ in the catalysts has certain influence on the yield of methyl glycolate. The reaction conditions are as follows: the hydrogen ester mole ratio 150

reaction pressure 2 MPa

reaction temperature 200℃ and the liquid space velocity 0.5 h-1. The Cu1Ni1/SiO2 catalyst showed the best catalytic performance

the conversion of dimethyl oxalate reached 90%

and the selectivity of methyl glycolate reached 80%

which has stable operation for 100 h. Above results can provide some references for the development of high catalytic activity

high selectivity

long service life and easy production of methyl glycolate.