Vanadium/phosphorus mixed oxide catalyst
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United States of America Patent
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Oct 18, 2005
Grant Date -
Aug 19, 2004
app pub date -
Feb 18, 2004
filing date -
Jun 1, 1999
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Expired
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Abstract
Active vanadium/phosphorus mixed oxide catalyst for the conversion of non-aromatic hydrocarbons, e.g., n-butane, into maleic anhydride. The catalyst is prepared from the catalyst precursor, that is, prepared by the reaction of a source of vanadium in an organic medium in the presence of a phosphorus source. The organic medium is (a) isobutyl alcohol or a mixture of isobutyl alcohol and benzyl alcohol and (b) a polyol. The catalyst precurso is transformed into the active catalyst by an activation process that includes a heat treatment that includes applying a temperature of up to 600° C.
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