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Title:
CATALYST FOR PRODUCING METHACROLEIN AND METHACRYLIC ACID, AND PROCESS FOR PRODUCTION THEREOF
Document Type and Number:
WIPO Patent Application WO/2012/063771
Kind Code:
A1
Abstract:
The present invention relates to a molybdenum-containing composite oxide catalyst which can be used in the production of methacrolein by the vapor phase catalytic oxidation of isobutylene or the like, and provides a catalyst having high activity, excellent reduction resistance and heat resistance and a long catalytic life and a process for producing the catalyst. The catalyst is used for producing methacrolein or the like by the oxidation and/or oxidative dehydrogenation of at least one compound selected from isobutylene and the like in a vapor phase with molecular oxygen or the like, and is characterized by being produced by a production process which comprises the steps of: (1) preparing an aqueous slurry (A) containing at least molybdenum and bismuth as constituent elements; (2) preparing an aqueous slurry (B) containing at least molybdenum and cerium; (3) mixing the aqueous slurry (A) with the aqueous slurry (B); (4) drying a liquid material produced by mixing the aqueous slurry (A) with the aqueous slurry (B); and (5) burning the resulting dried material.

Inventors:
IIJIMA TAKAYUKI
NISHIMURA EIJI
KOJIMA TOSHITAKE
Application Number:
PCT/JP2011/075573
Publication Date:
May 18, 2012
Filing Date:
November 07, 2011
Export Citation:
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Assignee:
NIPPON KAYAKU KK (JP)
IIJIMA TAKAYUKI
NISHIMURA EIJI
KOJIMA TOSHITAKE
International Classes:
B01J23/88; B01J37/04; B01J37/08; C07C45/35; C07C47/22; C07C51/23; C07C51/25; C07C57/05; C07B61/00
Foreign References:
JPH0441454A1992-02-12
JPH06192144A1994-07-12
JPH09122490A1997-05-13
JP2001025664A2001-01-30
JP2000325795A2000-11-28
JP2007061763A2007-03-15
JPS5946132A1984-03-15
Attorney, Agent or Firm:
NAITO TERUO (JP)
Teruo Naito (JP)
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Claims: