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US 2026/0183756 A1Published application
Catalyst, method for producing the same, and method for producing acrylonitrile
AssigneeAsahi Kasei Kabushiki Kaisha
InventorsAtsushi TOMODA, Shota AIKI
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Abstract
A catalyst including a metal oxide, which is an oxide of a metal including molybdenum, bismuth and iron, and silica supporting the metal oxide, wherein when a surface parameter of silicon by SEM-EDX is A and a bulk parameter of silicon by XRF is B, A/B is 0.95 to 1.04.
Claims12
A catalyst comprising a metal oxide, which is an oxide of a metal including molybdenum, bismuth and iron, and silica supporting the metal oxide,
- wherein when a surface parameter of silicon by SEM-EDX is A and a bulk parameter of silicon by XRF is B, A/B is 0.95 to 1.04.
A method for producing a catalyst, comprising:
- a step of providing a first mixture which comprises a silica starting material and molybdenum and has a pH of 4.1 to 5.5,
- a step of preparing a second mixture by mixing the first mixture with bismuth and iron,
- a step of preparing particles by spray-drying the second mixture, and
- a step of preparing catalyst by calcining the particles.
1 more element
Dependencies are inferred from the claim text.