| abstract |
(57) Abstract: A method for producing a catalyst for synthesizing unsaturated aldehydes and unsaturated carboxylic acids having a high yield in a gas phase catalytic oxidation reaction is provided. At least molybdenum as a catalyst component, A raw material salt aqueous solution containing bismuth, iron, nickel and/or cobalt is heat-treated to obtain a catalyst precursor powder having an ignition loss of 1% to 5%, and then the catalyst precursor powder is molded, A method for producing a catalyst for synthesizing an unsaturated aldehyde and an unsaturated carboxylic acid obtained by firing. |