Title:
A catalyst for methacrylic acid production, its manufacturing method, and a manufacturing method of the methacrylic acid using the catalyst
Document Type and Number:
Japanese Patent JP6077533
Kind Code:
B2
Abstract:
An object of the present invention is to provide a process for producing a catalyst for gas-phase contact oxidation of methacrolein, isobutyraldehyde or isobutyric acid to produce methacrylic acid in a high yield and a high selectivity. A catalyst wherein an alkali metal element, particularly cesium among alkali metal elements, is added by a specific method in a partially neutralized salt of a hetero polyacid which contains Mo, V, P, an alkali metal element and NH 4 as essential active ingredients, the catalyst being characterized by having extremely high catalytic performance.
Inventors:
Hideomi Sakai
Eiji Nishimura
Tomoyuki Ejiri
Eiji Nishimura
Tomoyuki Ejiri
Application Number:
JP2014515669A
Publication Date:
February 08, 2017
Filing Date:
May 16, 2013
Export Citation:
Assignee:
NIPPON KAYAKU KABUSHIKI KAISHA
International Classes:
B01J27/24; B01J37/00; B01J37/02; B01J37/04; B01J37/08; C07C51/235; C07C57/055
Domestic Patent References:
| JP2006272151A |
Foreign References:
| WO2010052909A1 | ||||
| WO2005039760A1 |
Attorney, Agent or Firm:
Shinei Patent Office