[1B04-1B06] CCU/carbon recycle (2)

[1B05] Development of MgAl₂O₄-supported Iron-based catalyst to produce olefins by CO₂ Hydrogenation

○Misuzu Komuro¹, Hitoshi Ogihara¹, Hideki Kurokawa¹ (1. Saitama University)

Keywords:Carbon dioxide hydrogenation, iron-based catalyst, olefin production

This study focused on olefin synthesis via a CO₂-CO-FT pathway under atmospheric pressure. M/MgAl₂O₄ catalysts (M: Fe, Co, Ni, or Cu) were tested in H₂/CO₂ reaction to prepare olefins by a one-step reaction. As a result, it was found that the supported Co, Ni, and Cu catalysts mainly produced CO and CH4. In contrast, the Fe-based catalyst produced a significant amount of C₂ and higher hydrocarbons. Therefore, we attempted to clarify the effect of adding a second metal component on the increasing activity of the Fe-based catalyst. We also found that the addition of K on the Fe-based catalyst improved the selectivity to olefins, and the addition of Cu promoted the formation of C2 and higher hydrocarbons.