Title:
【発明の名称】ゼオライト触媒の再生方法
Document Type and Number:
Japanese Patent JP2003535687
Kind Code:
A
Abstract:
A process for the regeneration of a zeolitic catalyst which is at least partially exhausted by use in the synthesis of optionally substituted methylenedianiline (MDA) and derivatives thereof, or of a mixture of optionally substituted MDA and derivatives thereof, with a higher homologous product the process involving washing said catalyst with an aromatic compound having at least one substitutent on the aromatic ring having activating characteristics with respect to the electrophilic substitution, in liquid or at least partially liquid phase.
Inventors:
Pero, carlo
De angelis, albert
Farias, Otello
Bossetti, Aldo
De angelis, albert
Farias, Otello
Bossetti, Aldo
Application Number:
JP2002503443A
Publication Date:
December 02, 2003
Filing Date:
June 22, 2001
Export Citation:
Assignee:
Dow Global Technologies Inc.
International Classes:
B01J29/90; B01J38/50; B01J38/56; C07B61/00; C07C209/54; C07C209/78; C07C211/49; C07C211/50; (IPC1-7): B01J29/90; B01J38/56; C07C209/54; C07C211/49
Attorney, Agent or Firm:
Takashi Ishida (4 others)