Alkali compounds catalyzed low temperature methanol synthesis over Cu-based catalyst

摘要

A novel mixed catalyst system containing alkali compounds over Cu/MgO-Na catalyst was developed to synthesize methanol from syngas via ethyl formate in a slurry reactor. The results exhibited that among the used alkali formates (HCOOM, M＝Li, Na, Cs, Ca, Ba), sodium formate showed the optimizing catalytic function with Cu/MgO-Na catalyst, and high CO conversion(＞80%) and methanol selectivity(～90%) with a mass space velocity of 1800L(STP)/h.kg was achieved at low temperature of 433K and 5.0Mpa. In addition, Na_2CO_3, NaHCO_3 and NaOH could catalyze the methanol synthesis through their transformation into HCOONa.