Title:
気相接触酸化用の固定床反応器およびアクロレインまたはアクリル酸の製造方法
Document Type and Number:
Japanese Patent JP4947917
Kind Code:
B2
Abstract:
A fixed bed reactor including a reaction tube filled with a gas-phase oxidation catalyst, wherein a solid acid, of which acid strength (H 0 ) meets an inequality: -5.6 ¤ H 0 ¤ 1.5, is placed in a gas passage containing a starting material compound and/or a produced compound; a process for producing acrolein, the process including using the above fixed bed reactor for production of acrolein by gas-phase catalytic oxidation of propylene with molecular oxygen; a process for producing acrylic acid, the process including using the above fixed bed reactor for production of acrolein by gas-phase catalytic oxidation of propylene with molecular oxygen and for subsequent production of acrylic acid by gas-phase catalytic oxidation of the acrolein with molecular oxygen; and a method for suppressing deposition of a catalyst inhibitor in a fixed bed reactor including a reaction tube filled with a gas-phase oxidation catalyst, the method including placing a solid acid, of which acid strength (H 0 ) meets an inequality: -5.6 ¤ H 0 ¤ 1.5, in the fixed bed reactor for gas-phase catalytic oxidation.
Inventors:
Naohiro Fukumoto
Application Number:
JP2005120244A
Publication Date:
June 06, 2012
Filing Date:
April 18, 2005
Export Citation:
Assignee:
Nippon Shokubai Co., Ltd.
International Classes:
B01J8/06; C01B33/12; C07C45/35; C07C47/22; C07C51/235; C07C57/055; C07B61/00
Domestic Patent References:
| JP64063543A | ||||
| JP2004255343A | ||||
| JP2003089671A | ||||
| JP8206504A | ||||
| JP63036830A | ||||
| JP8047641A | ||||
| JP8047642A |
Attorney, Agent or Firm:
Kyuichi Ueki
Tadashi Sugakawa
Osamu Futakuchi
Hiroaki Ito
Tadashi Sugakawa
Osamu Futakuchi
Hiroaki Ito