Metal-substituted layered Fe-based oxides as a solid base catalyst

Metal-substituted KFe11O17 with a 8-ferrite structure was synthesized as a solid base catalyst for biodiesel fuel production. Among the metal-substituted samples, Mn-substituted KFe11O17, KFe10MnO17, showed the highest catalytic activity for the transesterification of triacetin with methanol and a higher catalytic activity than that of CaO, MgO, and KF/Al2O3 as typical solid bases. CO2-TPD analysis showed that a weak base site was formed mainly on KFe10MnO17. Since a high concentration of methoxy species as an active site in this reaction could be formed during reaction over the weak basic site, KFe10MnO17 can be considered an effective catalyst.

Automated summary

Metal-substituted KFe11O17 was synthesized as a solid base catalyst for biodiesel fuel production. Among the metal-substituted samples, Mn-substituted KFe11O17 showed the highest catalytic activity for the transesterification reaction and exhibited higher activity than other typical solid base catalysts.