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：DE3166067D1

公开(公告)日：1984-10-18

申请号：DE3166067

申请日：1981-10-24

Applicant: BASF AG

Inventor： SAUER WOLFGANG DR ,  AQUILA WERNER DR ,  HOFFMANN WOLFGANG DR ,  BRENNER KARL ,  HALBRITTER KLAUS DR

IPC: C07C47/21 ,  B01J23/00 ,  C07B61/00 ,  C07C45/00 ,  C07C45/38 ,  C07C45/81 ,  C07C67/00

Abstract: A process for the continuous preparation of 3-alkyl-buten-1-als by oxidative dehydrogenation of 3-alkyl-buten-1-ols at from 320 DEG to 650 DEG C. with oxygen over a catalyst containing copper and/or silver, wherein, within one second after contact with the catalyst, the vaporous reaction mixture, which is at from 320 DEG to 650 DEG C., is brought into contact with a liquid comprising water and/or the condensed reaction mixture at from -20 DEG to 50 DEG C., and the 3-alkyl-buten-1-als are separated off from the resulting condensate.

公开(公告)号：DE3061326D1

公开(公告)日：1983-01-20

申请号：DE3061326

申请日：1980-05-08

Applicant: BASF AG

Inventor： SAUER WOLFGANG DR ,  HOFFMANN WOLFGANG DR

IPC: C07C47/127 ,  B01J8/02 ,  B01J8/04 ,  B01J23/00 ,  B01J23/50 ,  C07B61/00 ,  C07C45/00 ,  C07C45/38 ,  C07C45/78 ,  C07C45/81 ,  C07C67/00

Abstract: Glyoxal is prepared by oxidizing glycol in the presence of a silver catalyst, with subsequent or partial condensation of glycol, glyoxal, glycol aldehyde, formaldehyde and/or water by treatment with water or aqueous glyoxal solution in fine dispersion, under specific conditions with regard to the temperature and dispersion of the treatment liquid. The glyoxal which can be prepared by the process of the invention is a wrinkle-resist agent, an assistant for increasing the tear strength and elasticity of fiber materials, a tanning agent, a photographic hardener and a valuable starting material for the production of synthetic resins, textile assistants, paper assistants and plastics.

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：DE4423347A1

公开(公告)日：1996-01-11

申请号：DE4423347

申请日：1994-07-04

Applicant: BASF AG

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

IPC: B01J23/22 ,  B01J23/92 ,  C07C5/42 ,  C07B35/04 ,  C07C5/333 ,  C07C15/46

Abstract: Described is a method for the catalytic oxidative dehydrogenation of alkyl aromatics or paraffin hydrocarbons to the corresponding alkenyl aromatics or olefins, respectively, by means of a redox catalyst (oxygen carrier). In a first step, the alkyl aromatic or paraffin (educt) is dehydrogenated, in the absence of molecular oxygen, by a solid catalyst consisting of reducible magnesium vanadate(V) which may or may not be on a carrier, the catalyst being reduced in the process, and in a second step the reduced catalyst is re-oxidized with an oxidizing agent, the two steps being carried out in alternation at separate times or in separate locations.

公开(公告)号：DE4009027A1

公开(公告)日：1991-09-26

申请号：DE4009027

申请日：1990-03-21

Applicant: BASF AG

Inventor： GAENG MANFRED DR ,  SAUKEL HEINZ DR ,  HOFFMANN WOLFGANG DR ,  KOENIG JOSEF

IPC: C07D263/56

Abstract: Process for the preparation of 2-methylbenzoxazole by cyclisation of hydroxyacetophenone (acetophenol) in the presence of Pluriol 400 E with simultaneous elimination of water, in which drying and melting of the hydroxyacetophenone, cyclisation of the hydroxyacetophenone and removal of the water of reaction and of the 2-methylbenzoxazole by distillation from the reaction mixture after cyclisation are carried out in a drier.