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The present process may be less energy intensive compared withthe existing processes.A proprietary amide aleohol additive can markedly in-hibit the deactivation of CH_3ONa catalyst for methanol carbonylation.Thespace-time yield(STY)of the methyl formate(MF)is 625g·1 ~1h ~1after 40htime on stream with theadditive,while the yield is only 190g·1 ~1h ~1without the additive at the same reaction conditions.By using four types of tubu-lar reactors without any mechanico-rotary parts and hige speed circulation ofthe reactants for the carbonylation at P_(CO)=5MPa,a 95% single pass conversion of CO and 645g·1 ~1h ~1of STY of MF were obtained.A novel Cu-ZnO/Al_2O_3 catalyst for MF hydrogenolysis to methanol is reported in this pa-per.The Cu-ZnO/Al_2O_3 catalyst is characterized by the resistance to poison-ing of high concentration CO up to 16.2v%.