Title:
不飽和カルボン酸合成用触媒の製造方法
Document Type and Number:
Japanese Patent JP5842378
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a catalyst for synthesizing unsaturated carboxylic acid, the catalyst allowing the unsaturated carboxylic acid to be synthesized from unsaturated aldehyde with high selectivity.SOLUTION: A method for producing the catalyst for synthesizing unsaturated carboxylic acid is provided, the catalyst being used when the unsaturated carboxylic acid is synthesized by vapor phase catalytic oxidation of unsaturated aldehyde with molecular oxygen. The method includes the steps of: preparing the slurry containing, at the least, a phosphorus raw material, a molybdenum raw material, an alkali metal raw material, at least one selected from the group consisting of ammonium compounds and ammonia, and water; drying the prepared slurry to prepare catalytic dried powder; and firing the prepared catalytic dried powder. The following conditions (1), (2) are satisfied. The condition (1) is that the size of primary particles of the catalytic dried powder is 70-400 nm. The condition (2) is that the size of secondary particles in the prepared slurry is 0.6-10 μm.
Inventors:
Tsutomu Fujita
Masahide Kondo
Masahide Kondo
Application Number:
JP2011101413A
Publication Date:
January 13, 2016
Filing Date:
April 28, 2011
Export Citation:
Assignee:
Mitsubishi Rayon Co., Ltd.
International Classes:
B01J27/199; B01J37/04; B01J37/08; C07B61/00; C07C51/235; C07C57/055
Domestic Patent References:
| JP2008272626A | ||||
| JP2001328810A | ||||
| JP2005066476A | ||||
| JP2010131494A | ||||
| JP8010621A | ||||
| JP2010142687A |
Foreign References:
| US20030171214 | ||||
| WO2010013749A1 |
Attorney, Agent or Firm:
Akio Miyazaki
Masaaki Ogata
Masaaki Ogata