CO Hydrogenation over Transition Metals (Fe, Co, or Ni) Modified K/Mo 2 C Catalysts

Abstract

Transition metals (Fe, Co, or Ni) modified K/Mo 2 C catalysts were prepared and investigated as catalysts for CO hydrogenation. The addition of Fe, Co, or Ni to K/Mo 2 C catalyst led to a sharp increase in both the activity and selectivity of C 2 + OH , but the promotion effects were quite different and followed the sequence: Ni > Co > Fe for the activity and Fe > Co > Ni for the alcohol selectivity. For the products distributions, it also displayed some differences; Co promoter showed much higher C 5 + hydrocarbon selectivity than Fe or Ni promoter, but Fe or Co promoter gave lower methane selectivity than Ni promoter, and Fe promoter showed the highest C 2 = - C 4 = selectivity.