公开(公告)号：DE19804912A1

公开(公告)日：1999-08-12

申请号：DE19804912

申请日：1998-02-07

Applicant: BASF AG

Inventor： FISCHER WOLFGANG DR ,  BUECHNER EUGEN-WALTER DR ,  DEIMLING AXEL DR ,  GAUSEPOHL HERMANN DR ,  SCHADE CHRISTIAN DR

IPC: B01J19/18 ,  C08F2/00 ,  C08F279/02 ,  C08F287/00 ,  C08F279/00

Abstract: The present invention relates to a method for producing impact-resistant modified styrene polymers, wherein said method comprises the anionic polymerisation of styrene in the presence of a rubber in one or more serially-mounted polymerisation reactors. The rubber is produced in the shape of a solution during a process carried out immediately upstream. The rubber solvent, which has a boiling point lower than that of the styrene or ethyl benzene, is removed by distillation with vaporisation cooling from at least one of said polymerisation reactors using the heat generated during the polymerisation process, and is further fed back to the rubber production step.

公开(公告)号：ES2124449T3

公开(公告)日：1999-02-01

申请号：ES95103373

申请日：1995-03-09

Applicant: BASF AG

Inventor： DEIMLING AXEL DR ,  RUPPEL WILHELM DR ,  BEHLING UWE ,  BIEDENKAPP DIETER DR

IPC: B01J8/06 ,  C07B61/00 ,  C07C5/333 ,  C07C15/46

公开(公告)号：DE4408889A1

公开(公告)日：1995-09-21

申请号：DE4408889

申请日：1994-03-16

Applicant: BASF AG

Inventor： DEIMLING AXEL DR ,  RUPPEL WILHELM DR ,  BEHLING UWE ,  BIEDENKAPP DIETER DR

IPC: B01J8/06 ,  C07B61/00 ,  C07C5/333 ,  C07C15/46

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：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.

公开(公告)号：DE59501278D1

公开(公告)日：1998-02-19

申请号：DE59501278

申请日：1995-10-31

Applicant: BASF AG

Inventor： DEIMLING AXEL DR ,  BEHLING UWE

IPC: B01J8/02 ,  B01J8/06 ,  C07C5/333

Abstract: An arrangement, esp. a reactor, for carrying out endo- and/or exothermic catalytically advanced gas phase reactions, consists of a mantle, a heat exchanger (1) with deflector plates (1a), a reaction chamber (6) with a base which accommodates the catalyst, and a tube handle heat exchanger (2) for the catalyst filling. The heat exchangers are exposed to a side flow. A central pipe (3) connects the outer heat exchanger (1) area with the gas chamber over the reaction chamber (4). The arrangement also has a hot gas inlet and outlet.

公开(公告)号：DE4446384A1

公开(公告)日：1996-06-27

申请号：DE4446384

申请日：1994-12-23

Applicant: BASF AG

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

IPC: B01J23/648 ,  C07C5/42 ,  C07C15/46 ,  C07C5/333 ,  B01J23/22 ,  B01J23/92

Abstract: The invention concerns a method of producing olefinically unsaturated compounds such as styrene by the oxidative dehydrogenation of suitable hydrocarbons, using a pre-oxidised oxygen carrier which acts as a catalyst, in the absence of molecular oxygen, and the re-oxidation of the oxygen carrier in at least two reactors in which dehydrogenation and regeneration take place alternately and which are connected thermally via heat exchangers and a common heat-carrier circulation system.

公开(公告)号：DE4437252A1

公开(公告)日：1996-04-25

申请号：DE4437252

申请日：1994-10-18

Applicant: BASF AG

Inventor： HAGEMEYER ALFRED DR ,  WATZENBERGER OTTO DR ,  DEIMLING AXEL DR

IPC: B01J23/08 ,  B01J23/10 ,  B01J23/14 ,  B01J23/48 ,  B01J23/70 ,  B01J38/12 ,  C07B35/04 ,  C07B61/00 ,  C07C5/42 ,  C07C11/02 ,  C07C15/46 ,  B01J23/18 ,  B01J23/92 ,  B01J38/04 ,  C07C5/333

Abstract: Regenerative process for prodn. of olefinically unsatd. cpds. by an alternating and cyclically repeated oxidn. of selectively oxidisable hydrocarbons at a temp. Treact using an oxygen transfer catalyst (I) in the absence of molecular oxygen, with regeneration of the spent (I) with a gaseous molecular oxidising agent (II), whereby (i) before introducing the (II), the spent (reduced) catalyst (I) is cooled to a temp. Tregen which is also below the reaction temp. Treact whilst still in the presence of the reaction having a reducing action or under an inert gas; (ii) regeneration is carried out at the temp. Tregen by beginning the introduction of the (II) and continuing the addn. such that the highest temp. achieved during the regeneration remains lower than the reaction initiation temp. Treact.0 for the subsequent oxidn./dehydrogenation reaction; and (iii) after removing the oxidising medium, the regenerated catalyst is heated to the reaction initiation temp. Treact and only then is the oxidisable hydrocarbon starting material introduced. The catalyst is pref. at least one reducible metal oxide chosen from oxides of Bi, V, Ce, Fe, In, Ag, Cu, Co, Mn, Pb, Sn, Mo, W, As and/or Sb, opt. mounted on a carrier such as a transition metal oxide, esp. TiO2 or Cr2O3.