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US 11,772,080 B2Granted
Catalyst, method for producing catalyst, and method for producing acrylonitrile
AssigneeAsahi Kasei Kabushiki Kaisha
InventorsShota Aiki, Akiyoshi Fukuzawa
Life of this patent
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Abstract
A catalyst comprising molybdenum, bismuth, iron, and nickel, wherein a proportion of a surface concentration of the nickel to a bulk concentration of the nickel is 0.60 to 1.20.
Claims17
A catalyst comprising molybdenum, bismuth, iron, and nickel,
- wherein a proportion of a surface concentration of the nickel to a bulk concentration of the nickel is 0.60 to 1.20 and the catalyst has a specific surface area of 10 to 70 m2/g.
A catalyst comprising molybdenum, bismuth, iron, and nickel,
- wherein a proportion of a surface concentration of the nickel to a bulk concentration of the nickel is 0.60 to 1.20, and
- a proportion of the surface concentration of the nickel to a surface concentration of the molybdenum is 0.15 to 0.40.
A catalyst comprising molybdenum, bismuth, iron, and nickel,
- wherein a proportion of a surface concentration of the nickel to a bulk concentration of the nickel is 0.60 to 1.20, and
- a proportion of particles having a particle size of 45 μm or less in a volume-based particle size distribution is 5 to 45%.
Dependencies are inferred from the claim text.