公开(公告)号：DE10225927A1

公开(公告)日：2003-12-24

申请号：DE10225927

申请日：2002-06-11

Applicant: BASF AG

Inventor： HESSE MICHAEL ,  SCHLITTER STEPHAN ,  BORCHERT HOLGER ,  SCHUBERT MARKUS ,  ROESCH MARKUS ,  BOTTKE NILS ,  FISCHER ROLF-HARTMUTH ,  WECK ALEXANDER ,  WINDECKER GUNTHER ,  HEYDRICH GUNNAR

IPC: B01J23/80 ,  C07B61/00 ,  C07C29/149 ,  C07C31/20 ,  C07C29/132 ,  C07D307/20 ,  C07D307/32

Abstract: The present invention relates to a process for preparing optionally alkyl-substituted 1,4-butanediol by two-stage catalytic hydrogenation in the gas phase of C 4 -dicarboxylic acids and/or of derivatives thereof having the following steps: a) introducing a gas stream of a C 4 -dicarboxylic acid or of a derivative thereof at from 200 to 300° C. and from 2 to 60 bar into a first reactor and catalytically hydrogenating it to a product which contains mainly optionally alkyl-substituted gamma-butyrolactone; b) converting the product stream into the liquid phase; c) introducing the product stream obtained in this way into a second reactor at a temperature of from 100° C. to 240° C. and a pressure of from 20 to 250 bar and catalytically hydrogenating it in the liquid phase to optionally alkyl-substituted 1,4-butanediol; d) removing the desired product from by-products and any unconverted reactants; e) optionally recycling unconverted intermediates into one or both hydrogenation stages, said hydrogenation stages both using a catalyst which comprises =5% by weight, preferably from 5 to 95% by weight, in particular from 20 to 90% by weight, of a support, said second reactor having a higher pressure than said first reactor, and the product mixture removed from said first reactor being introduced without further purification into said second reactor.

公开(公告)号：DE10133054A1

公开(公告)日：2003-01-16

申请号：DE10133054

申请日：2001-07-07

Applicant: BASF AG

Inventor： SCHLITTER STEPHAN ,  BORCHERT HOLGER ,  HESSE MICHAEL ,  SCHUBERT MARKUS ,  BOTTKE NILS ,  FISCHER ROLF-HARTMUTH ,  ROESCH MARKUS ,  HEYDRICH GUNNAR ,  WECK ALEXANDER

IPC: B01J23/89 ,  B01J37/02 ,  B01J37/03 ,  C07D307/08 ,  C07D307/33 ,  C07D315/00

Abstract: A catalyst (I) for the gas phase hydrogenation of 4C-dicarboxylic acids and/or derivatives, preferably maleic acid anhydride, comprises copper oxide (20-94 wt.%), palladium and/or a palladium compound (0.005-5 wt.%) and an oxide support (2-79.995 wt.%) comprising oxides of Al, Si, Zn, La, Ce, Group IIIa-VIIIa elements and/or Group IA and II elements. Independent claims are also included for: (i) a process for the production of the catalyst (I) by impregnation of an oxide supported copper oxide catalyst with a solution of a soluble palladium compound, drying and optionally calcining; and (ii) a process for the gas phase hydrogenation of 4C-dicarboxylic acids and/or derivatives, preferably maleic acid anhydride in the presence of the catalyst (I).

公开(公告)号：DE10064301A1

公开(公告)日：2002-07-04

申请号：DE10064301

申请日：2000-12-22

Applicant: BASF AG

Inventor： HESSE MICHAEL ,  BORCHERT HOLGER ,  SCHLITTER STEPHAN

IPC: B01J23/66 ,  C07D301/10 ,  B01J27/138 ,  B01J27/18 ,  B01J27/232

Abstract: The invention relates to a catalyst containing silver, an alkaline-earth metal compound and a promoter consisting of a mixture of at least two compounds, said mixture containing at least one potassium compound and having a melting point below 340 DEG C. The invention also relates to a method for producing the inventive catalyst and the use of the same for the epoxidation of alkenes, especially propene.

公开(公告)号：DE10061555A1

公开(公告)日：2002-06-20

申请号：DE10061555

申请日：2000-12-11

Applicant: BASF AG

Inventor： BORCHERT HOLGER ,  SCHLITTER STEPHAN ,  FISCHER ROLF-HARTMUTH ,  ROESCH MARKUS ,  STEIN FRANK ,  RAHN RALF-THOMAS ,  WECK ALEXANDER

IPC: B01J23/72 ,  B01J23/76 ,  B01J23/80 ,  B01J23/89 ,  B01J37/02 ,  C07B61/00 ,  C07D307/08 ,  C07D307/33 ,  C07D315/00

Abstract: The invention relates to a catalyst for the hydrogenation of C4 dicarboxylic acids and/or derivatives thereof, preferably maleic anhydride, in the gas phase, characterised in that said catalyst comprises 5 to 100 wt %, preferably 40 to 90 wt % copper oxide and 0 to 95 wt %, preferably 10 to 60 wt % of one or more metals, or compounds thereof, from the group comprising Al, Si, Zn, Pd, La, Ce, elements of groups III A to VIII A and of groups I A and II A as active mass and said mass is deposited on an inert support in the form of a thin layer.

公开(公告)号：DE10061558A1

公开(公告)日：2002-06-13

申请号：DE10061558

申请日：2000-12-11

Applicant: BASF AG

Inventor： BORCHERT HOLGER ,  SCHLITTER STEPHAN ,  HESSE MICHAEL ,  STEIN FRANK ,  FISCHER ROLF-HARTMUTH ,  RAHN RALF-THOMAS ,  WECK ALEXANDER ,  ROESCH MARKUS

IPC: C07B61/00 ,  C07C51/36 ,  C07C55/10 ,  C07D307/08 ,  C07D307/33 ,  C07B41/00

Abstract: The invention relates to a method for the hydrogenation of C4-dicarboxylic acids or derivatives thereof in the gas phase. The method is carried out in a fluid bed reactor. Known catalytic compositions may be applied.