公开(公告)号：EP2247384A2

公开(公告)日：2010-11-10

申请号：EP09707013.0

申请日：2009-01-28

申请人： Breimair, Josef

发明人： Breimair, Josef

IPC分类号： B01J35/02 ,  B01J23/22 ,  B01J23/68 ,  B01J27/198 ,  C07C51/265 ,  C07C51/31

CPC分类号： B01J35/0006 ,  B01J8/04 ,  B01J8/067 ,  B01J21/063 ,  B01J23/002 ,  B01J23/22 ,  B01J23/682 ,  B01J27/198 ,  B01J35/04 ,  B01J37/0219 ,  B01J37/0221 ,  B01J37/0244 ,  B01J2208/025 ,  B01J2523/00 ,  C07C51/265 ,  C07C51/313 ,  C07C63/16 ,  B01J2523/15 ,  B01J2523/47 ,  B01J2523/51 ,  B01J2523/53 ,  B01J2523/55 ,  B01J2523/54 ,  B01J2523/18

摘要： The invention relates to a catalyst for the catalytic gas phase oxidation of aromatic hydrocarbons to form aldehydes, carboxylic acids and/or carboxylic acid anydrides, in particular phthalic acid anhydride, comprising a plurality of different catalyst layers, wherein the catalyst comprises a hot spot catalyst layer in which the greatest local temperature maximum occurs, relative to the entire catalyst, at least one catalyst layer placed prior to the hot spot catalyst layer, and preferably at least one catalyst layer placed after the hot spot catalyst layer. According to the invention, in the case of antimony and/or bismuth and/or niobium in the catalytically active material of the hot spot catalyst layer the amount of at least one of said elements in the catalytically active material of at least one catalyst layer placed before is reduced compared to the amount of the same element in the catalytically active material of the hot spot catalyst layer by a pre-determined value.

公开(公告)号：EP2321045A2

公开(公告)日：2011-05-18

申请号：EP09777410.3

申请日：2009-07-24

申请人： Breimair, Josef

发明人： Breimair, Josef

IPC分类号： B01J23/06 ,  B01J23/68 ,  C07B41/08 ,  C07C51/265 ,  B01J8/04 ,  B01J8/06 ,  B01J23/22 ,  B01J27/198 ,  B01J27/199 ,  B01J35/00 ,  B01J37/02

CPC分类号： B01J23/002 ,  B01J21/06 ,  B01J21/063 ,  B01J23/22 ,  B01J23/682 ,  B01J23/683 ,  B01J27/198 ,  B01J27/199 ,  B01J35/002 ,  B01J37/0009 ,  B01J37/0219 ,  B01J37/0221 ,  B01J37/0228 ,  B01J37/08 ,  B01J2523/00 ,  C07C51/265 ,  C07D307/89 ,  C07C63/16 ,  B01J2523/15 ,  B01J2523/47 ,  B01J2523/51 ,  B01J2523/53 ,  B01J2523/54 ,  B01J2523/55 ,  B01J2523/18 ,  B01J2523/68 ,  B01J2523/69

摘要： The invention relates to a catalyst for catalytic gas phase oxidation of aromatic hydrocarbons to form aldehydes, carboxylic acids and/or carboxylic acid hydrides, in particular phthalic acid anhydride. The active mass comprises vanadium oxide, preferably vanadium pentoxide, titanium dioxide, preferably in the anatas-modification, and at least one silver mixing element oxide with defined elements, preferably vanadium and/or molybdenum and/or tungsten and/or niobium and/or antimony, and/or a vanadium mixing element oxide with defined elements, preferably bismuth and/or molybdenum and/or tungsten and/or antimony and/or niobium. When producing the catalyst, in particular during the production of a catalyst suspension or a powder mixture necessary for coating a carrier, at least one silver and/or vanadium mixing element oxide and/or at least one precursor compound, in particular at least one multi-core precursor compound, of at least one silver and/or vanadium mixing element oxide is used as a raw material source.