Controllable assembly of Fe3O4–Fe3C@MC by in situ doping of Mn for CO2 selective hydrogenation to light olefins

Mn in situ doped Fe 3 C anchored in mesoporous carbon was prepared and employed for converting CO 2 to light olefins successfully. The in situ doped Mn modified the ratio of FeO x /FeC x and surface electron density, which optimized the C/H on active sites.