The optimal molar ratio of the reactant (CO:O2:C2H5OH) was around 10:1:4, giving ethanol conversion 31.2% and the selectivity to DEC 96%.

• 当乙醇、氧气、一氧化碳的配比为4: 1: 10时，乙醇转化率达到31.；2%25，碳酸二乙酯选择性达到96%25。