Title:
CATALYST FOR METHACRYLIC ACID PRODUCTION, METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING METHACRYLIC ACID
Document Type and Number:
WIPO Patent Application WO/2014/157040
Kind Code:
A1
Abstract:
A method for producing a catalyst for methacrylic acid production, said catalyst being used for the purpose of producing a methacrylic acid by vapor-phase catalytic oxidation of methacrolein or the like and containing Mo, V, P, Cs, NH4 and Cu as essential active components. This method for producing a catalyst for methacrylic acid production comprises: a step (a) wherein an aqueous heteropolyacid solution or the like (liquid (A)), which contains Mo, P and V as constituent elements, is prepared; a step (b) wherein a slurry liquid (liquid (B)) is prepared by mixing some of the thus-obtained liquid (A) with an aqueous cesium compound solution or the like; and a step (c) wherein a slurry liquid (liquid (C)) is prepared by mixing the rest of the liquid (A) with the liquid (B).
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Inventors:
SAKAI HIDEOMI (JP)
KONNO YOUSUKE (JP)
EJIRI TOMOYUKI (JP)
NISHIMURA EIJI (JP)
KONNO YOUSUKE (JP)
EJIRI TOMOYUKI (JP)
NISHIMURA EIJI (JP)
Application Number:
PCT/JP2014/057990
Publication Date:
October 02, 2014
Filing Date:
March 24, 2014
Export Citation:
Assignee:
NIPPON KAYAKU KK (JP)
International Classes:
B01J27/199; B01J37/00; B01J37/04; B01J37/08; C07C51/235; C07C57/055; C07B61/00
Foreign References:
| JP2011152543A | 2011-08-11 | |||
| JP2011092882A | 2011-05-12 | |||
| JPH0924277A | 1997-01-28 | |||
| JP2003190798A | 2003-07-08 | |||
| JPH04182449A | 1992-06-30 | |||
| JP2007283265A | 2007-11-01 | |||
| JPH05177141A | 1993-07-20 |
Other References:
See also references of EP 2979757A4
Attorney, Agent or Firm:
Shin-Ei Patent Firm, P. C. (JP)
Patent business corporation Shin-Ei Patent Firm (JP)
Patent business corporation Shin-Ei Patent Firm (JP)
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