Improved stability and activity of Fe-based catalysts through strong metal support interactions due to extrinsic oxygen vacancies in Ce<sub>0.8</sub>Sm<sub>0.2</sub>O<sub>2−δ</sub> for the efficient synthesis of ammonia
John Humphreys, Rong Lan, Shigang Chen, Shanwen Tao
Abstract
The SMSI between Fe and oxygen vacancies in Ce<sub>0.8</sub>Sm<sub>0.2</sub>O<sub>2−δ</sub> helps to weaken and break the strong NN bonds in N<sub>2</sub>, increasing the catalytic activity. Materials with anion vacancies improve oxygenate tolerance property of ammonia synthesis catalysts.
Topics & Concepts
CatalysisOxygenMaterials scienceMetalOxygen atomInorganic chemistryCrystallographyChemistryMoleculeMetallurgyOrganic chemistryBiochemistryAmmonia Synthesis and Nitrogen ReductionCatalytic Processes in Materials ScienceHydrogen Storage and Materials