Catalytic performance of Fe modified K/Mo2C catalyst for CO hydrogenation

摘要

Fe modified and un-modified K/Mo2C were prepared and investigated as catalysts for CO hydrogenation reaction.Compared with K/Mo2C catalyst,the addition of Fe increased the production of alcohols,especially the C2+OH.Meanwhile,considerable amounts of C5+ hydrocarbons and C=2-C=4 were formed,whereas methane selectivity greatly decreased.Also,the activity and selectivity of the catalyst were readily affected by the reaction pressure and temperature employed.According to the XPS results,Mo4+ might be responsible for the production of alcohols,whereas the low valence state of Mo species such as Moo and/or Mo2+ might be account for the high activity and selectivity toward hydrocarbons.