Oxidative ammination of benzene to aniline using molecular oxygen as the terminal oxidant
AssigneeSun Company, Inc. (R&M)
InventorsVincent A. Durante, Tilak P. Wijesekera, Swati Karmakar
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Abstract
The present invention comprises a process for catalytic oxidative ammination of aromatic hydrocarbons which comprising contacting aromatic feedstock with oxidant, such as molecular oxygen, under suitable reaction conditions, in the presence of a catalyst comprising three essential components: a support; transition metal; and a mono- or binucleating ligand. In one embodiment of the invention the ligand comprises at least one nitro or nitroso group. In another embodiment, the ligand comprises a multidentate, chelating binuclear compound. The process is particularly suited, for example, to the one-step conversion of benzene to aniline.
Claims32
A process for catalytic ammination of aromatic hydrocarbons comprising contacting aromatic feedstock with ammonia and oxidant under suitable reaction conditions in the presence of a catalyst comprising:
- (a) a support;
- (b) transition metal selected from the group consisting of vanadium, niobium, copper, palladium, nickel and silver, or combinations thereof;
- and
- (c) a promoter comprising a mononuclear or binuclear ligand comprising at least one nitro or nitroso group.
A process for catalytic ammination of aromatic hydrocarbons comprising contacting aromatic feedstock with oxidant comprising molecular oxygen under suitable reaction conditions in the presence of a catalyst comprising:
- (a) a support;
- (b) transition metal selected from the group consisting of vanadium, niobium, copper, palladium, nickel and silver, or combinations thereof;
- and
- (c) a promoter comprising a multidentate chelating, binucleating ligand (i) comprising heteroatom sites comprising nitrogen, oxygen, sulfur, phosphorus or arsenic atoms or combinations thereof, and (ii) comprising at least one amido or imino group.
Dependencies are inferred from the claim text.