公开(公告)号：MY129170A

公开(公告)日：2007-03-30

申请号：MYPI9800842

申请日：1998-02-26

Applicant: BASF AG

Inventor： ULRICH BERNHARD ,  CIMNIAK THOMAS ,  HEIDEMANN THOMAS

IPC: B01J37/02 ,  B01J21/06 ,  B01J23/22 ,  C07C51/255 ,  C07C51/265 ,  C07C51/31 ,  C07C63/16

Abstract: IN A PROCESS FOR PRODUCING COATED CATALYSTS FOR THE CATALYTIC GAS-PHASE OXIDATION OF AROMATIC HYDROCARBONS TO GIVE CARBOXYLIC ACIDS AND/OR CARBOXYLIC ANHYDRIDES, ON THE SUPPORT MATERIAL OF WHICH A LAYER COMPRISING CATALYTICALLY ACTIVE METAL OXIDES IS APPLIED IN THE FORM OF A SHELL, A POWDER IS FIRST PRODUCED FROM A SOLUTION OR A SUSPENSION OF THE CATALYTICALLY ACTIVE METAL OXIDES AND THEIR PRECURSOR COMPOUNDS OR THESE PRECURSOR COMPOUNDS ALONE IN THE PRESENCE OR ABSENCE OF AUXILIARIES FOR CATALYST PRODUCTION, THE POWDER IS SUBSEQUENTLY APPLIED IN THE FORM OF A SHELL IN THE PRESENCE OR ABSENCE OF AUXILIARIES FOR CATALYST PRODUCTION TO THE SUPPORT AFTER OR WITHOUT PRIOR CONDITIONING, WITHOUT PRIOR HEAT TREATMENT TO GENERATE THE CATALYTICALLY ACTIVE METAL OXIDES AND THE SUPPORT COATED IN THIS WAY IS SUBJECTED TO A HEAT TREATMENT TO GENERATE THE CATALYTICALLY ACTIVE METAL OXIDES.

公开(公告)号：DE59808069D1

公开(公告)日：2003-05-28

申请号：DE59808069

申请日：1998-02-12

Applicant: BASF AG

Inventor： HEIDEMANN THOMAS ,  CIMNIAK THOMAS ,  ULRICH BERNHARD

IPC: B01J21/06 ,  B01J23/22 ,  B01J37/02 ,  C07C51/255 ,  C07C51/265 ,  C07C51/31 ,  C07C63/16

Abstract: The invention relates to a method for producing gas-phase catalysts gas-phase oxidation of aromatic hydrocarbons into carboxylic acids and/or carboxylic acid anhydrides upon whose carrier material a coating containing catalytically active metal oxide is applied in the form of a shell, wherein a powder is initially produced from a solution and/or suspension of catalytically active metal oxides and the precursor compounds thereof or simply the precursor compounds in the presence or absence of auxiliary agents in order to produce the catalyst. Said powder is then applied, in the form of a shell, to the carrier in the presence or absence of auxiliary agents after or without previous conditioning and without previous thermal treatment to produce the catalyst. The carrier which is thus coated undergoes thermal treatment in order to produce catalytically active metal oxides.