Patent Number: 8,716,523

Title: Catalyst for use in production of methacrylic acid and method for manufacturing the same

Abstract: A method for manufacturing a catalyst of which active components are partly neutralized salt of heteropoly acid comprising molybdenum, phosphorus, vanadium, cesium, antimony, and ammonia as essential components, wherein the method is characterized in mixing an antimony compound with a complex oxide of the essential active components in the catalyst containing active components other than antimony, wherein the antimony compound may be added during slurry preparation.

Inventors: Sudo; Atsushi (Takasaki, JP), Kurakami; Tatsuhiko (Sanyoonoda, JP), Kojima; Toshitake (Takasaki, JP), Hayashimoto; Shigeo (Kita-ku, JP)

Assignee: Nippon Kayaku Kabushiki Kaisha

International Classification: C07C 51/235 (20060101); B01J 23/22 (20060101)

Expiration Date: 5/06/12018