METHOD FOR PRODUCING CONJUGATED DIOLEFIN

Title:

METHOD FOR PRODUCING CONJUGATED DIOLEFIN

Document Type and Number:

WIPO Patent Application WO/2017/146024

Kind Code:

A1

Abstract:

Provided is a method for producing a conjugated diolefin by causing a monoolefin with a carbon number of 4 or greater to undergo a gas-phase contact oxidative dehydrogenation reaction in the presence of a catalyst, wherein damage to the catalyst is minimized and the method for producing a conjugated diolefin has superior long-term stability. A method for producing a conjugated diolefin by causing a monoolefin with a carbon number of 4 or greater to undergo a gas-phase contact oxidative dehydrogenation reaction in the presence of a catalyst for conjugated diolefin production, said method for producing a conjugated diolefin being characterized in that the catalyst, which has a pre-use composition of active components expressed by formula 1, is regenerated after use, and a post-regeneration catalyst having a cumulative relative surface area of 5.17m2/g or less is used. Formula 1: Mo12BiaFebCocNidXeYfZgOh

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Inventors:

NAKAZAWA YUTA (JP)
OKUMURA SHIGEKI (JP)
NISHIZAWA BUNGO (JP)
OBATA TOMOHIRO (JP)

Application Number:

PCT/JP2017/006302

Publication Date:

August 31, 2017

Filing Date:

February 21, 2017

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Assignee:

NIPPON KAYAKU KK (JP)

International Classes:

C07C5/48; B01J23/887; B01J23/94; B01J35/10; B01J38/02; B01J38/12; C07C11/167; C07B61/00

Domestic Patent References:

WO2014202501A1	2014-12-24
WO2014086768A1	2014-06-12
WO2015004042A2	2015-01-15
WO2014086815A1	2014-06-12

Foreign References:

JP2012192329A	2012-10-11
JPS58193739A	1983-11-11

Attorney, Agent or Firm:

KAWAGUTI & PARTNERS (JP)

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