| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a methacrylic acid- manufacturing catalyst, which has high reaction activity and selectivity, and can manufacture methacrylic acid with consistency and good reproducibility in an industrial scale, and a method for manufacturing methacrylic acid using the methacrylic acid-manufacturing catalyst obtained by this method. SOLUTION: In manufacturing a catalyst containing at least phosphorus, molybdenum and vanadium, which is used for manufacturing methacrylic acid by oxidizing methacrolein with molecular oxygen or gas containing molecular oxygen in a vapor phase, a catalyst precursor formed article, which is obtained by forming a catalyst precursor dried powder that is obtained form a mixed solution or an aqueous slurry containing the catalyst components, is dried by a continuous dryer and then fired. |
