Iron carbide catalysts—especially the Fe7C3; phase—show great promise for efficient CO2 hydrogenation to olefins. Here, the authors report the first stable, nearly pure Fe7C3 catalyst for CO2-to-olefins conversion, overturning conventional models that posit the necessity of Fe5C2–Fe3O4 coexistence.
- Fei Qian
- Maolin Wang
- Xiao-Dong Wen
