Catalysts for hydroxylation and ammination of aromatics using molecular oxygen as the terminal oxidant without coreductant
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United States of America Patent
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Nov 9, 1999
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N/A
app pub date -
Jul 31, 1997
filing date -
Jul 31, 1997
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Expired
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Abstract
Catalyst compositions are disclosed which are useful for the hydroxylation and the ammination of aromatic hydrocarbons using molecular oxygen as terminal oxidant. The catalysts comprise a support selected from the group consisting of metal oxides, molecular sieves, zeolites and clays; transition metal selected from the group consisting of vanadium, niobium, copper, palladium, nickel and silver, and combinations thereof; and at least one 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 and of benzene to aniline.
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