公开(公告)号：US11351523B2

公开(公告)日：2022-06-07

申请号：US16334780

申请日：2017-09-21

Applicant: JOHNSON MATTHEY DAVY TECHNOLOGIES LIMITED

Inventor： Michael Bainbridge ,  Javad Tabatabaei

IPC: B01J27/28 ,  B01J38/02 ,  B01J38/06 ,  B01J38/16 ,  B01J27/198 ,  C07C51/353

Abstract: A process for regenerating a deactivated vanadium-titanium-phosphorous catalyst which has been used in the production of unsaturated carboxylic acid is disclosed. The process comprises contacting the deactivated vanadium-titanium-phosphorous catalyst with a regeneration stream comprising steam as a regeneration agent at a temperature which is the same or similar to that used in the production of the unsaturated carboxylic acid.