公开(公告)号：DE4224881A1

公开(公告)日：1994-02-03

申请号：DE4224881

申请日：1992-07-28

Applicant: BASF AG

Inventor： FETZER THOMAS DR ,  BUECHELE WOLFGANG DR ,  WISTUBA HERMANN DR ,  OTTO BERNHARD DR ,  BUERGER GERT DR ,  HERRMANN GUENTER DR

IPC: B01D53/94 ,  B01D53/56 ,  B01D53/86 ,  B01J23/89 ,  C01B13/02 ,  C07C51/27 ,  C07C51/487 ,  B01J23/50 ,  B01J21/04 ,  B01D53/36 ,  C01B21/02 ,  C07C55/14

Abstract: The invention concerns an aluminium oxide catalyst containing silver, the catalyst containing in addition copper oxide and, optionally, other promoters and active components. This catalyst is used to decompose pure nitrous oxide (N2O) or nitrous oxide in gas mixtures at elevated temperatures, and exhibits high activity.

公开(公告)号：DE4025587A1

公开(公告)日：1992-02-13

申请号：DE4025587

申请日：1990-08-11

Applicant: BASF AG

Inventor： DREWS RONALD DR ,  SCHEIDSTEGER OLAF DR ,  BUECHELE WOLFGANG DR ,  HESS KLAUS DR ,  SCHACHNER HELMUT DR

IPC: B01D53/86 ,  B01J23/22 ,  B01J23/24 ,  B01J23/28 ,  B01J37/02

公开(公告)号：DE19535416A1

公开(公告)日：1997-03-27

申请号：DE19535416

申请日：1995-09-23

Applicant: BASF AG

Inventor： BAIER MICHAEL DR ,  RIEKER CHRISTOPHER WILLIAM DR ,  HOFSTADT OTTO ,  BUECHELE WOLFGANG DR ,  POEPEL WOLFGANG JUERGEN DR ,  PETERSEN HERMANN DR ,  NETH NORBERT DR

IPC: B01J23/78 ,  B01J23/80 ,  B01J23/84 ,  B01J23/85 ,  B01J37/00 ,  B01J37/08 ,  B01J37/32 ,  C07C5/333 ,  C07C15/46 ,  B01J23/83 ,  B01J23/888

Abstract: The invention concerns a method of producing catalysts, containing iron and potassium and optionally other elements, suitable for the selective dehydrogenation of hydrocarbons to give the corresponding olefinically unsaturated hydrocarbons. In a first step, a finely particulate dry or aqueous mixture of an iron compound with a potassium compound and optionally also compounds of other elements is calcined in such a way that 5 to 50 mu m diameter conglomerates, made up of smaller particles, are produced. In a second step, preferably following shaping, the mixture is calcined at 300 to 1000 DEG C, the maximum calcining temperature in the second step preferably being at least 30 DEG C lower than that in the first step. The invention also concerns the use of the catalysts produced in this way, particularly in the dehydrogenation of ethylbenzene to styrene.

公开(公告)号：DE4422770A1

公开(公告)日：1996-01-04

申请号：DE4422770

申请日：1994-06-29

Applicant: BASF AG

Inventor： HAGEMEYER ALFRED DR ,  POEPEL WOLFGANG JUERGEN DR ,  BUECHELE WOLFGANG DR ,  HOFSTADT OTTO ,  DEIMLING AXEL DR ,  HOFFMANN WOLFGANG DR

IPC: B01J23/26 ,  B01J23/31 ,  B01J23/92 ,  C07B61/00 ,  C07C5/42 ,  C07C11/02 ,  C07C15/40 ,  C07C15/46 ,  B01J23/22 ,  B01J23/24 ,  B01J23/34 ,  B01J23/68 ,  B01J23/86 ,  C07C5/333 ,  C07C11/00

Abstract: A process for the catalytic-oxidising dehydrogenation of alkyl aromatics or paraffin hydrocarbons to the corresponding alkenyl aromatics or olefines by means of a redox catalyst (oxygen transmitter), in which in a first reaction stage the alkyl aromatic or paraffin hydrocarbon (educt) is dehydrogenated with a catalyst composed of a reducible metal oxide and chrominum oxide in the absence of molecular oxygen and the catalyst is reduced, and in a second stage the reduced catalyst is reoxidised with an oxidising agent.

公开(公告)号：DE4301469A1

公开(公告)日：1994-07-28

申请号：DE4301469

申请日：1993-01-21

Applicant: BASF AG

Inventor： FETZER THOMAS DR ,  BUECHELE WOLFGANG DR ,  IRGANG MATTHIAS DR ,  OTTO BERNHARD DR ,  WISTUBA HERMANN DR ,  BUERGER GERT DR

IPC: B01J23/76 ,  B01J23/00 ,  B01J23/80 ,  B01J37/08 ,  C07B61/00 ,  C07C29/153 ,  C07C29/154 ,  C07C29/156 ,  C07C31/04 ,  B01J23/82 ,  B01J23/78 ,  B01J23/34

Abstract: Catalysts prepared by combining M-Al2O4 where M is an element of Group Ib, VIIb or VIII of the Periodic Table of the Elements with tin, lead, an element of group IIa or IIb of the Periodic Table of the Elements as oxide or salt or in elemental form and calcining at 300-1300 DEG C. under 0.1-200 bar and the process for preparing them.

公开(公告)号：DE4237740A1

公开(公告)日：1994-05-11

申请号：DE4237740

申请日：1992-11-09

Applicant: BASF AG

Inventor： POEPEL WOLFGANG JUERGEN DR ,  TREMMEL GREGOR ,  BUECHELE WOLFGANG DR ,  DEIMLING AXEL DR ,  PETERSEN HERMANN DR

IPC: B01J23/78 ,  B01J23/85 ,  B01J23/92 ,  B01J23/94 ,  B01J37/00 ,  B01J38/00 ,  B01J38/68 ,  C07C5/32 ,  C07C5/333

Abstract: Proposed is a method of producing catalysts containing iron, potassium and cerium from spent catalysts of this type used in the dehydrogenation of hydrocarbons (i.e. a regeneration method). The method calls for the spent catalyst to be ground and optionally cleaned, and the original catalytic action to be produced again by adjustment of the composition and restoring the external form, an effective quantity of potassium being added to the ground material together with a quantity of cerium such that the total amount of cerium is greater than that originally present.

公开(公告)号：DE4025931A1

公开(公告)日：1991-02-21

申请号：DE4025931

申请日：1990-08-16

Applicant: BASF AG

Inventor： BUECHELE WOLFGANG DR ,  HOELDERICH WOLFGANG DR ,  MROSS WOLF DIETER DR ,  DEIMLING AXEL DR ,  BIFFAR WERNER DR

IPC: B01J23/86 ,  B01J23/88 ,  B01J23/887 ,  B01J23/888 ,  B01J27/188 ,  C07C5/333

Abstract: A novel catalyst, esp. for use in the dehydrogenation of satd. hydrocarbons to give olefins, comprises (a)50-95 wt.%, calculated as Fe2O3, of one or more Fe cpds.; (b) 3-50 wt.% calculated as K2O, of a K cpd.; (c) 0.1-20 wt.%, calculated as Cr2O3 or Al2O3, of one or more Cr or Al cpds.; (d) 0.1-20 wt.%, calculated as MoO3 or WO3 of one or more Mo or W cpds.; (e) 0.1-20 wt.%, calculated as V2O5 or P2O5, of one or more V or P cpds.; (f) 0.1-5 wt.%, calculated as Li2O, of a Li cpd.; and (g) other components obtd. when the Fe and K are predominantly or wholly introduced in the form of the water-insol. K ferrite K2Fe22O34. USE/ADVANTAGE - The catalyst is in ready-to-use form esp. for the prepn. of styrene from Et benzene, giving high activity and high selectivity simultaneously, and being self-regenerating under the reaction conditions, such properties being attained by predominantly or solely introducing the Fe and K as the ferrite K2Fe22O34.

公开(公告)号：DE4025930A1

公开(公告)日：1991-02-21

申请号：DE4025930

申请日：1990-08-16

Applicant: BASF AG

Inventor： BUECHELE WOLFGANG DR ,  HOELDERICH WOLFGANG DR ,  MROSS WOLF DIETER DR ,  DEIMLING AXEL DR ,  BIFFAR WERNER DR

IPC: B01J23/86 ,  B01J23/888 ,  C07C5/333

Abstract: A novel catalyst, esp. for use in the dehydrogenation of satd. hydrocarbons to give olefins, comprises (a) 40-90 wt.% calculated as Fe2O3, of an Fe cpd.; (b) 5-40 wt.% calculated as K2O, of a K cpd.; (c) 1-15 wt.%, calculated as WO3, of a W cpd.; (d) 0.1-15 wt.%, calculated as Me2O3, of a Cr, Al or rare-earth cpd.; (e) 0.1-15 wt.%, calculated as MeO, of a Zn, Cd or alkaline earth metal cpd.; and (f) other components obtd. when Fe and K are predominantly or wholly introduced in the form of the water-insol. K ferrite K2Fe22O34. USE/ADVANTAGE - The catalyst is in ready-to-use form esp. for the prepn. of styrene from Et benzene, giving high activity and high selectivity simultaneously, and being self-regenerating under the reaction conditions, such properties being attained by introducing the Fe and K predominantly or solely as the ferrite K2Fe22O34.