Process for the manufacture of maleic anhydride
AssigneeProduits Chimiques Ugine Kuhlmann
InventorsJean Henri Camille Ciquier, Michel Hyppolite Carfantan
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Abstract
A process for the manufacture of maleic anhydride by the oxidation of benzene with oxygen in the presence of a catalyst which has been previously activated and which comprises an inert support coated with a catalytically active mass containing by weight 10% to 20% of antimony trioxide, 40% to 70% of vanadium pentoxide, 20% to 50% of molybdenum trioxide, 0.7% to 1.5% of phosphorus pentoxide, 0.9% to 2.0% of sodium oxide and possibly another mineral oxide.
Claims9
A process for the manufacture of maleic anhydride by the oxidation of benzene with oxygen in the presence of a catalyst which has been previously activated and which comprises an inert support coated with a catalytically active mass containing, by weight, 10% to 20% of antimony trioxide, 40% to 70% of vanadium pentoxide, 20% to 50% of molybdenum trioxide, 0.7% to 1.5% of phosphorus pentoxide, 0.9% to 2.0% of sodium oxide and optionally another mineral oxide selected from the group consisting of, nickel, calcium, iron, silver, strontium, uranium, tungsten, cobalt, and boron oxides.
Dependencies are inferred from the claim text.