CATALYTIC VAPOR-PHASE OXIDATION METHOD - NIPPON CATALYTIC CHEM IND

Title:

CATALYTIC VAPOR-PHASE OXIDATION METHOD

Document Type and Number:

WIPO Patent Application WO/2009/116550

Kind Code:

A1

Abstract:

Provided is a method for carrying out a catalytic vapor-phase oxidation reaction stably over a long term on an industrial scale. The method is characterized in that at least a part of a catalyst disposed at a gas outlet with respect to the direction of reaction gas flow is replaced by an unused catalyst and/or the length of a layer is extended by filling the gas outlet additionally with an unused catalyst when the catalyst performance degrades.

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Inventors:

TANIMOTO MICHIO (JP)
HAKOZAKI NOBUYUKI (JP)

Application Number:

PCT/JP2009/055221

Publication Date:

September 24, 2009

Filing Date:

March 11, 2009

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Assignee:

NIPPON CATALYTIC CHEM IND (JP)
TANIMOTO MICHIO (JP)
HAKOZAKI NOBUYUKI (JP)

International Classes:

C07C27/00; C07C45/35; C07C47/22; C07C51/235; C07C51/25; C07C57/05; C07C57/055; C07B61/00

Foreign References:

US20040015013A1	2004-01-22
JPH03294238A	1991-12-25
JP2003089671A	2003-03-28

Attorney, Agent or Firm:

Patent Profession Corporation Odajima Patent Office (9-15 Akasaka 1-chom, Minato-ku Tokyo 52, JP)

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