Title:
METHOD FOR PRESERVING CATALYST
Document Type and Number:
WIPO Patent Application WO/2004/062798
Kind Code:
A1
Abstract:
A method for preserving a catalyst, characterized in that in a process for producing an objective product continuously by a vapor phase oxidation reaction using a phosphorus-molybdenum-vanadium catalyst containing phosphorus, molybdenum and vanadium, the phosphorus-molybdenum-vanadium catalyst held in a reactor before the start of a reaction or during the stop of the reaction is kept in a state that the catalyst has a water content of 30 mg or less per 1 g of the catalyst in a dry state. The preserving method allows the prevention of the deterioration of the catalyst held in a reactor with ease and simplicity.
Inventors:
TANIGUCHI YOSHIYUKI (JP)
KURODA TORU (JP)
TAKEZAWA HIDEYASU (JP)
KABU YASUHIRO (JP)
KURODA TORU (JP)
TAKEZAWA HIDEYASU (JP)
KABU YASUHIRO (JP)
Application Number:
PCT/JP2004/000102
Publication Date:
July 29, 2004
Filing Date:
January 09, 2004
Export Citation:
Assignee:
MITSUBISHI RAYON CO (JP)
TANIGUCHI YOSHIYUKI (JP)
KURODA TORU (JP)
TAKEZAWA HIDEYASU (JP)
KABU YASUHIRO (JP)
TANIGUCHI YOSHIYUKI (JP)
KURODA TORU (JP)
TAKEZAWA HIDEYASU (JP)
KABU YASUHIRO (JP)
International Classes:
B01J27/199; B01J33/00; B01J35/00; (IPC1-7): B01J33/00; B01J27/199; C07C57/055; C07C51/235
Domestic Patent References:
| WO2002064541A1 | 2002-08-22 |
Foreign References:
| JP2003010695A | 2003-01-14 |
Attorney, Agent or Firm:
Miyazaki, Teruo (16th Kowa Bldg. 9-20 Akasaka 1-chom, Minato-ku Tokyo, JP)
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