Catalyst for catalytic oxidation use
First Claim
1. A catalyst for catalytic oxidation use, comprising:
- a carrier containing silicon carbide, an inorganic bonding component, and at least one oxide selected from the group consisting of a niobium oxide, an antimony oxide, and a tungsten oxide; and
at least one oxide selected from the group consisting of a vanadium oxide and a molybdenum oxide as catalytically active component carried by the carrier.
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Accused Products
Abstract
A carrier containing silicon carbide, inorganic bonding component, and at least one oxide selected from the group consisting of a niobium oxide, an antimony oxide, and a tungsten oxide carries at least one oxide selected from the group consisting of a vanadium oxide and a molybdenum oxide as catalytically active component. An inexpensive catalyst for catalytic oxidation use can be thus offered that does not change its properties over a period of time, that boasts stable catalytic activity over a period of time, and that is suitable for, e.g., manufacture of an acid anhydride and a nitrile compound by conducting a catalytic gas-phase oxidation reaction (partial oxidation reaction) on a hydrocarbon.
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Citations
13 Claims
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1. A catalyst for catalytic oxidation use, comprising:
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a carrier containing silicon carbide, an inorganic bonding component, and at least one oxide selected from the group consisting of a niobium oxide, an antimony oxide, and a tungsten oxide; and at least one oxide selected from the group consisting of a vanadium oxide and a molybdenum oxide as catalytically active component carried by the carrier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of manufacturing phthalic anhydride from o-xylene and/or naphthalene, comprising the step of using a catalyst for catalytic oxidation, the catalyst at least including:
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a carrier containing silicon carbide, an inorganic bonding component, and at least one oxide selected from the group consisting of a niobium oxide, an antimony oxide, and a tungsten oxide; and a component carried by the carrier, at least including; at least one oxide selected from the group consisting of a vanadium pentoxide and a molybdenum oxide as the catalytically active component; anatase-type titanium dioxide; and at least one element selected from the group consisting of alkali metal elements, rare earth elements, sulfur, phosphorus, antimony, niobium, and boron.
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11. A method of manufacturing maleic anhydride from benzene, comprising the step of using a catalyst for catalytic oxidation, the catalyst at least including:
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a carrier containing silicon carbide, an inorganic bonding component, and at least one oxide selected from the group consisting of a niobium oxide, an antimony oxide, and a tungsten oxide; and a component carried by the carrier, at least including; at least one oxide selected form the group consisting of a vanadium pentoxide and a molybdenum trioxide as the catalytically active component carried by the carrier; phosphorus pentoxide; and at least one element selected from the group consisting of alkali metal elements, alkaline earth metal elements, and thallium.
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12. A method of manufacturing pyromellitic anhydride from 1,2,4,5-tetralkyl benzene comprising the step of using a catalyst for catalytic oxidation, the catalyst at least including:
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a carrier containing silicon carbide, an inorganic bonding component, and at least one oxide selected from the group consisting of a niobium oxide, an antimony oxide, and a tungsten oxide; and a component carried by the carrier, at least including; at least one oxide selected from the group consisting of a vanadium pentoxide and a molybdenum oxide as the catalytically active component carried by the carrier; phosphorus; molybdenum and/or tungsten; at least one element selected form the group consisting of antimony, silver, boron, chromium, cerium, niobium, and sulfur; at least one element selected from the group consisting of alkali metal elements, alkaline earth metal elements, and thallium; and at least one oxide selected from the group consisting of a titanium oxide, a zirconium oxide, and a tin oxide.
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13. A method of manufacturing an aromatic nitrite or a heterocyclic nitrite from an alkyl-substituted aromatic hydrocarbon or an alkyl-substituted heterocyclic compound by ammoxidation, comprising the step of using a catalyst for catalytic oxidation to manufacture an aromatic nitrile or a heterocyclic nitrile from an alkyl-substituted aromatic hydrocarbon or an alkyl-substituted heterocyclic compound, the catalyst at least including:
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a carrier containing silicon carbide, an inorganic bonding component, and at least one oxide selected from the group consisting of a niobium oxide, an antimony oxide, and a tungsten oxide; and a component carried by the carrier, at least including; at least one oxide selected from the group consisting of vanadium pentoxide, and at least one oxide selected from the group consisting of titanium dioxide, silicon dioxide, alumina, diatom earth, a double oxide containing titanium and silicon and a double oxide containing titanium and zirconium, and a triple oxide containing titanium, silicon, and zirconium, as the catalytically active component; and at least one element selected from the group consisting of molybdenum, tungsten, chromium, antimony, bismuth, phosphorus, niobium, iron, cobalt, nickel, manganese, and copper.
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Specification