Title:
メタクリル酸製造用触媒の製造方法及びメタクリル酸の製造方法。
Document Type and Number:
Japanese Patent JP4848813
Kind Code:
B2
Abstract:
To produce a long-life catalyst for methacrylic acid production and to produce methacrylic acid in good productivity over a long term by using the catalyst.
A catalyst comprising a heteropolyacid compound containing phosphorus and molybdenum is produced by drying an aqueous mixture of raw materials for the catalyst to obtain a dried product of a chromaticness index b of 6.0 or higher, molding the dried product, and firing the molding. A compound selected from among methacrolein, isobutylaldehyde, isobutane, and isobutyric acid is subjected to a gas-phase catalytic oxidation reaction in the presence of the produced catalyst.
COPYRIGHT: (C)2008,JPO&INPIT
Inventors:
Junya Yoshizawa
Koichi Nagai
Hiroyuki Ando
Koichi Nagai
Hiroyuki Ando
Application Number:
JP2006090552A
Publication Date:
December 28, 2011
Filing Date:
March 29, 2006
Export Citation:
Assignee:
Sumitomo Chemical Co., Ltd.
International Classes:
B01J27/199; B01J37/08; C07C51/235; C07C57/055; C07B61/00
Domestic Patent References:
| JP2006314923A | ||||
| JP2003093882A | ||||
| JP2003201261A | ||||
| JP2004130261A | ||||
| JP2003010689A |
Foreign References:
| WO2006001360A1 |
Attorney, Agent or Firm:
Toru Nakayama