Process for the transformation of a vanadium/phosphorus mixed oxide catalyst precursor into the active catalyst for the production of maleic anhydride
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United States of America Patent
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Dec 8, 1998
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Apr 28, 1997
filing date -
Apr 29, 1996
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Abstract
A vanadium/phosphorus mixed oxide catalyst precursor is transformed into the active catalyst for the production of maleic anhydride. The activation takes place in a fluidized bed and includes the steps of (a) initially heating the precursor; (b) further heating under superatmospheric pressure; (c) isothermal stage at superatmospheric pressure; and, finally, (d) cooling the activated catalyst obtained. Catalysts activated according to this procedure show high performance in the conversion of non-aromatic hydrocarbons to maleic anhydride.
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