Selective Oxidation Of Propylamine To Propionitrile And Propionaldehyde On Oxygen-covered Gold

摘要

Oxidative dehydrogenation of amines using heterogeneous gold catalysts has unanticipated potential; chemisorbed atomic oxygen is used to activate propylamine, producing propionitrile and/or propionaldehyde on a single-crystal Au(111) surface.rnUnderstanding the chemistry of organonitrogen compounds on transition metal surfaces is important for catalysis, self-assembled monolayers (SAM), and electrochemistry. The characterization of adsorbed organonitrogen molecules and their reaction pathways on metal surfaces includes the identification of adsorbed intermediates and final products and their structure, which could provide the mechanistic details of the selective activation of C-H, N-H, and C-N bonds. The adsorption and reaction of aliphatic and aromatic amines has been investigated extensively due to the importance of the basic amine group to many heterogeneously catalyzed processes as reactants and products and as catalyst modifiers. Previous surface chemical studies of amines have focused primarily on clean and/or oxygen-covered Ni, Ru, Pt, W, Cu, Ag, and Si surfaces.