公开(公告)号：MY143495A

公开(公告)日：2011-05-31

申请号：MYPI20082495

申请日：2006-12-21

Applicant: BASF SE

Inventor： ULRICH CREMER ,  KLAUS-JOACHIM MUELLER-ENGEL ,  ULRIKE WEGERLE ,  GERHARD LAQUA ,  ULRICH HAMMON

IPC: C07C51/16

Abstract: 44 PROCESS FOR HETEROGENEOUSLY CATALYSED GAS PHASE PARTIAL OXIDA- TION OF AT LEAST ONE ORGANIC STARTING COMPOUND ABSTRACT 5 A PROCESS FOR HETEROGENEOUSLY CATALYZED GAS PHASE PARTIAL OXIDATION OF AN ORGANIC STARTING COMPOUND OVER A FIXED CATALYST BED FRESHLY INSTALLED INTO A REACTION CHAMBER, IN WHICH THE REDUCTION IN THE QUALITY OF THE FIXED CATALYST BED IS RESTORED WITH INCREASING OPERATING TIME BY REPLACING A PORTION OF THE FIXED CATALYST BED BY A REPLACEMENT FIXED 10 CATALYST BED PART WHOSE VOLUME-SPECIFIC ACTIVITY IS LOWER THAN THE VOLUME-SPECIFIC ACTIV- ITY OF THE REPLACED FIXED CATALYST BED PART IN ITS FRESHLY INSTALLED STATE.