Title:
脂環式カルボン酸またはその誘導体の製法
Document Type and Number:
Japanese Patent JP4944440
Kind Code:
B2
Abstract:
Method for continuous production of alicyclic carboxylic acids or their derivatives comprises catalytic hydrogenation of aromatic carboxylic acids or their derivatives with a gas containing hydrogen and solid catalysts in a fixed bed, where the hydrogenation is carried out in at least three hydrogenation units connected in series, where at least the first two hydrogenation units are operated in loop driving fashion. Method for continuous production of alicyclic carboxylic acids or their derivatives comprises catalytic hydrogenation of aromatic carboxlic acids or their derivatives with a gas containing hydrogen and solid catalysts in a fixed bed, where the hydrogenation is carried out in at least three hydrogenation units connected in series, where at least the first two hydrogenation units are operated in loop driving fashion and at least two are switched in rows and the hydrogenation units that are operated in loop driving fashion is processed with different retention times, in which one of the hydrogenation units operated in loop driving fashion is smaller than in a directly following hydrogenation unit operated in loop driving fashion.
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Inventors:
Michael Grasse
Burghart Reken
Axel Tufrensky
Alfred Kaizik
Wilfried Bushken
Burghart Reken
Axel Tufrensky
Alfred Kaizik
Wilfried Bushken
Application Number:
JP2005379458A
Publication Date:
May 30, 2012
Filing Date:
December 28, 2005
Export Citation:
Assignee:
Evonik Oxeno GmbH
International Classes:
C07C51/36; C07C61/08; C07C61/09; C07C61/12; C07C61/13; C07C61/135; C07C67/303; C07C69/74; C07B61/00
Domestic Patent References:
| JP8511776A | ||||
| JP2001526252A | ||||
| JP11029528A | ||||
| JP2005537914A | ||||
| JP54163554A | ||||
| JP5238971A |
Foreign References:
| US20060183936 |
Attorney, Agent or Firm:
Toshio Yano
Takuya Kuno
Einzel Felix-Reinhard
Takuya Kuno
Einzel Felix-Reinhard