Effect of Different Promoter on Industrial Methanol Synthesis Catalyst from CO_2 Hydrogenation

A series of catalysts for methanol synthesis were prepared by impregnating CeO2,ZrO2,La2O3,MnO2,Pr2O3,SrO,V2O5 over a industrial methanol synthesis catalyst(C301).Catalytic properties of modified catalysts were systemically investigated,using the technologies of X-ray diffraction(XRD),nitrogen adsorptoin-desorption(BET),hydrogen temperature programmed reduction(H2-TPR),carbon dioxide temperature programmed desorption(CO2-TPD)and the evaluation of catalytic activity was conducted in a micro fixed-bed reactor.The results show that after the catalyst is modified by CeO2,ZrO2,La2O3,MnO2,SrO,V2O5 are promoted the activation of methanol synthesis by CO2 hydrogenation,especially,the ZrO2-doped C301 has enthanced CO2 conversion by about 5%,methanol selectivity by about 8%.