Hydroxylation of aromatics using molecular oxygen as the terminal oxidant without coreductant
AssigneeSunoco, Inc.
InventorsVincent A. Durante, Tilak P. Wijesekera, Swati Karmakar
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Abstract
A process is disclosed for the catalytic hydroxylation of aromatic hydrocarbons which comprises contacting aromatic feedstock with oxidant comprising molecular oxygen, under suitable reaction conditions, in the presence of a catalyst comprising three essential components: a support; transition metal selected from the group consisting of vanadium, niobium, copper, palladium, nickel and silver, or combinations thereof, and a promoter comprising a multidentate chelating, binucleating ligand. The catalysts may further comprise additional metal ions. The process is particularly suited, for example, to the one-step conversion of benzene to phenol.
Claims24
A process for catalytic ring hydroxylation 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.