Title:
【発明の名称】6―アミノカプロニトリルとヘキサメチレンジアミンの同時製造方法
Document Type and Number:
Japanese Patent JP2000508305
Kind Code:
A
Abstract:
A process for the coproduction of 6-aminocapronitrile (ACN) and hexamethylenediamine (HMD) by treatment of adiponitrile (ADN) with hydrogen in the presence of a nickel-containing catalyst at temperatures not below room temperature and elevated hydrogen partial pressure in the presence or absence of a solvent comprises, after the conversion based on ADN and/or the selectivity based on ACN has or have dropped below a defined value (a) interrupting the treatment of ADN with hydrogen by stopping the feed of ADN and of the solvent, if used, (b) treating the catalyst at from 150 DEG to 400 DEG C. with hydrogen using a hydrogen pressure within the range from 0.1 to 30 MPa and a treatment time within the range from 2 to 48 h, and (c) then continuing the hydrogenation of ADN with the treated catalyst of stage (b).
Inventors:
Schneul, Werner
Voith, Guido
Flick, klemens
Melder, Johann-Peter
Fischer, Rolf
Halder, Wolfgang
Voith, Guido
Flick, klemens
Melder, Johann-Peter
Fischer, Rolf
Halder, Wolfgang
Application Number:
JP53582897A
Publication Date:
July 04, 2000
Filing Date:
April 04, 1997
Export Citation:
Assignee:
BASF Akchen Gezel Shaft
International Classes:
C07B61/00; C07C209/48; C07C211/12; C07C253/30; C07C255/24; B01J25/02; (IPC1-7): C07C253/30; B01J25/02; C07C209/48; C07C211/12; C07C255/24
Attorney, Agent or Firm:
Tajiro Taiji (1 person outside)