Hydroxylation of aromatics using molecular oxygen as the terminal oxidant without coreductant
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United States of America Patent
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Sep 14, 1999
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N/A
app pub date -
Jul 31, 1997
filing date -
Jul 31, 1997
priority date (Note) -
Expired
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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.
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