| abstract |
The present invention provides a method for producing a catalyst for synthesizing methacrylic acid, which can obtain methacrylic acid in a high yield by a gas phase catalytic oxidation reaction of methacrolein. SOLUTION: Molybdenum, phosphorus, vanadium, copper, and X (X represents one or more atoms selected from potassium, rubidium, cesium, and thallium) and contain 12 atoms of molybdenum. A solid A containing 0.5 to 3 atoms of phosphorus, molybdenum, copper and Y (Y represents one or more atoms selected from silicon, arsenic and germanium); After dry-mixing solid B containing no phosphorus or less than 0.1 atom with respect to 12 atoms of molybdenum, the molded product obtained by molding is fired at 300 ° C. or higher and 500 ° C. or lower. [Selection figure] None |