On the rate enhancement of ammonia synthesis over iron single crystals by coadsorption of aluminum oxide with potassium

摘要: The behavior of doubly promoted iron catalysts utilized for ammonia synthesis is modelled by the coadsorption aluminum oxide and potassium on single crystal surfaces that were employed in high pressure reaction rate studies. promoter effect due to its interaction with during preparation stage industrial catalyst. After reduction, stabilizes most active Fe(111) Fe(211) surfaces. Potassium does not appear be involved structural promotion but presence increases dinitrogen dissociation mostly lowering concentration adsorbed thus, making more catalytic sites available dissociation. Co-adsorbed alumina form a aluminate compound a) inhibits induced restructuring b) covers up synthesis.