Creation of the active site for methanol synthesis on a Cu/SiO2 catalyst

摘要: The effect of ZnO/SiO2 in a physical mixture Cu/SiO2 and on methanol synthesis from CO2 H2 was studied to clarify the role ZnO Cu/ZnO-based catalysts. An active prepared by following procedure: catalysts with different SiO2 particle size were mixed reduced at 523-723 K, then separated using sieve. activity catalyst increased reduction temperature fairly good agreement that previously obtained for ZnO/SiO2. These results indicated site created upon H2. It also found itself had no promotional except create site. not promote formation formate Cu surface based situ FT-IR measurements. A special species unstable 523 K an OCO asymmetric peak ~1585 cm-1 considered be adsorbed