METHOD FOR PRODUCING CATALYST FOR SYNTHESIZING UNSATURATED ALDEHYDE AND UNSATURATED CARBOXYLIC ACID

Japanese Patent JP2022067425

A

To provide a catalyst which is excellent in conversion ratio of a raw material, has high selectivity of a target product, can be produced in high yield, has high mechanical strength and can perform a long-term stable gas-phase catalytic oxidation reaction even under conditions where a large load is applied to a catalyst as a catalyst used in synthesizing the corresponding unsaturated aldehyde and unsaturated carboxylic acid by subjecting an olefin to gas phase contact oxidation with an oxygen-containing gas.SOLUTION: There is provided a method for producing a catalyst for synthesizing unsaturated aldehyde and unsaturated carboxylic acid which comprises a molding step of introducing a carrier, a powder containing catalyst component elements and a binder into a granulator and carrying the powder containing catalyst component elements on the carrier to form a catalyst precursor, wherein a carrier is introduced into a granulator, then a binder in an amount of 0.5 mass% or more and 40 mass% or less relative to amount of the carrier is introduced and further a powder containing catalyst component elements and a binder in an amount of 5 mass% or more and 60 mass% or less relative to the amount of the powder containing catalyst component elements are introduced to form a catalyst precursor.SELECTED DRAWING: None

OKADA ATSUKI
KONYA SOICHIRO
ITO HIROYUKI

JP2020176123A

May 06, 2022

October 20, 2020

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MITSUBISHI CHEM CORP

B01J27/138; C07C45/35; C07C47/22; C07C51/25; C07C57/05

Naoya Kamada
Bunji Kamata
Yaichiro Nakatani
Kitagawa Masanori

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