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Title:
CATALYST AND DIRECT-COUPLED TWO-STAGE CONTACT GAS PHASE OXIDATION METHOD USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/163707
Kind Code:
A1
Abstract:
Provided are: a catalyst by which the amount of a high-boiling aromatic compound formed as a by-product is reduced so that stable operation can be performed over a long time and a final product can be acquired at a high yield; and a direct-coupled two-stage contact gas phase oxidation method using the catalyst. The catalyst comprises molybdenum, bismuth, iron and an alkali metal as essential components, wherein the atomic ratio of the alkali metal to 12 molybdenum atoms is 0.3-1.0 exclusive and, in ammonia temperature-programmed desorption, the acid amount of the catalyst in the high temperature side is not greater than 0.026 mmol/g.

Inventors:
SAKAI Hideomi (2300 Oaza Kori, Sanyoonoda-sh, Yamaguchi 86, 〒7578686, JP)
FUKUNAGA Seiichiro (2300 Oaza Kori, Sanyoonoda-sh, Yamaguchi 86, 〒7578686, JP)
NAKAZAWA Yuuta (2300 Oaza Kori, Sanyoonoda-sh, Yamaguchi 86, 〒7578686, JP)
GOTO Shohei (2300 Oaza Kori, Sanyoonoda-sh, Yamaguchi 86, 〒7578686, JP)
OKUMURA Shigeki (2300 Oaza Kori, Sanyoonoda-sh, Yamaguchi 86, 〒7578686, JP)
SUGIYAMA Motohiko (2300 Oaza Kori, Sanyoonoda-sh, Yamaguchi 86, 〒7578686, JP)
Application Number:
JP2019/005842
Publication Date:
August 29, 2019
Filing Date:
February 18, 2019
Export Citation:
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Assignee:
NIPPON KAYAKU KABUSHIKI KAISHA (1-1 Marunouchi 2-chome, Chiyoda-ku Tokyo, 05, 〒1000005, JP)
International Classes:
B01J23/887; B01J35/08; B01J37/00; B01J37/08; C07C45/35; C07C45/37; C07C47/22; C07C51/23; C07C51/25; C07C57/05; C07B61/00
Domestic Patent References:
WO2014181839A12014-11-13
Foreign References:
JP2003251183A2003-09-09
JP2012115825A2012-06-21
JP2010241700A2010-10-28
Attorney, Agent or Firm:
SHIN-EI PATENT FIRM, P.C. (Toranomon East Bldg. 8F, 7-13 Nishi-Shimbashi 1-chome, Minato-k, Tokyo 03, 〒1050003, JP)
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