Catalytic performance of Fe modified K/MO 2C catalyst for CO hydrogenation

Abstract

Fe modified and un-modified K/M02C were prepared and investigated as catalysts for CO hydrogenation reaction. Compared with K/M O2C catalyst, the addition of Fe increased the production of alcohols, especially the C 2+OH. Meanwhile, considerable amounts of C 5+ hydrocarbons and C = 2- = 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, Mo 4+ might be responsible for the production of alcohols, whereas the low valence state of Mo species such as Mo° and/or Mo 2+ might be account for the high activity and selectivity toward hydrocarbons.