公开(公告)号：ID24080A

公开(公告)日：2000-07-06

申请号：ID991538

申请日：1998-06-05

Applicant: BASF AG

Inventor： GROSCH GEORG HEINRICH ,  MULLER ULRICH ,  WALCH ANDREAS ,  RIEBBER NORBERT ,  HARDER WOLFGANG

IPC: B01J29/90 ,  B01J38/12 ,  B01J38/20 ,  C07B41/00 ,  C07C29/48 ,  C07C45/27 ,  C07C51/265 ,  C07D301/12

Abstract: A process for regenerating a zeolite catalyst comprises the following stages: (I) Heating a partially or completely deactivated catalyst to 250-600° C. in an atmosphere which contains less than 2% by volume of oxygen, (II) treating the catalyst at from 250 to 800° C., preferably from 350 to 600° C., with a gas stream which contains from 0.1 to 4% by volume of an oxygen-donating substance or of oxygen or of a mixture of two or more thereof, and (III) treating the catalyst at from 250 to 800° C., preferably from 350 to 600° C., with a gas stream which contains from more than 4 to 100% by volume of an oxygen-donating substance or of oxygen or of a mixture of two or more thereof.