Fig. 4: Probing reaction mechanism of amine production over Fe2.5N.
From: Chemical looping synthesis of amines from N2 via iron nitride as a mediator
a DRIFTS spectra of Fe2.5N after isopropanol adsorption. b Conversion of isopropanol or acetone to isopropylamine at different temperatures with 5 bar H2. Reaction time: 5 h. Conversion of N in \({{{\rm{Fe}}}}_{2.5}{{\rm{N}}}=({{\rm{n}}}_{{{\rm{N}}}_{{\rm{fresh}}}}-{{\rm{n}}}_{{{\rm{N}}}_{{\rm{spent}}}})\)\(/{{\rm{n}}}_{{{\rm{N}}}_{{\rm{fresh}}}}\). Total flow rate: 60 mL/min; the total pressure: 10 bar. isopropanol supplying rate: 1.438*10-5 mol/min. c H2-TPR profile and MS signals of Fe2.5N under 5% H2/N2 (NH3 MS signal: m/z = 17). d The proposed reaction mechanism.
