METHOD FOR MANUFACTURING METHACRYLIC ACID- MANUFACTURING CATALYST AND METHOD FOR MANUFACTURING METHACRYLIC ACID

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...

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Bibliographische Detailangaben
Hauptverfasser:	SHIGEMATSU KUNIHIKO, MIURA NAOTERU
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	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.