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    11.
    发明专利
    未知

    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.

    12.
    发明专利
    未知

    公开(公告)号：DE4324905A1

    公开(公告)日：1995-01-26

    申请号：DE4324905

    申请日：1993-07-24

    Applicant: BASF AG

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

    IPC: B01J23/847 ,  B01J23/888 ,  C07C5/333 ,  B01J23/85

    Abstract: A dehydrogenation catalyst contains (a) from 40 to 90% by weight of iron, calculated as Fe2O3, (b) from 5 to 40% by weight of potassium, calculated as K2O, (c) from 0.01 to 10% by weight of vanadium, calculated as V2O5, (d) from 0.01 to 20% by weight of tungsten, calculated as WO3, (e) from 0.01 to 30% by weight of a rare earth metal, calculated as the oxide of the highest oxidation stage in each case, (f) from 0.01 to 15% by weight of aluminum, calculated as Al2O3, and (g) up to 10% by weight of cobalt, calculated as CoO. The catalyst is particularly suitable for the dehydrogenation of ethylbenzene to styrene in the presence of steam.

    15.
    发明专利
    未知

    公开(公告)号：DE4439807A1

    公开(公告)日：1996-05-09

    申请号：DE4439807

    申请日：1994-11-08

    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.

    16.
    发明专利
    未知

    公开(公告)号：DE4423975A1

    公开(公告)日：1996-01-11

    申请号：DE4423975

    申请日：1994-07-07

    Applicant: BASF AG

    Inventor： HAGEMEYER ALFRED DR ,  LAUTH GUENTER DR ,  LAUTENSACK THOMAS ,  DEIMLING AXEL DR

    IPC: B01J23/18 ,  B01J23/92 ,  C07B61/00 ,  C07C5/42 ,  C07C11/02 ,  C07C15/40 ,  C07C15/46 ,  B01J23/22 ,  B01J23/10 ,  C07B35/04 ,  C07C11/00

    Abstract: Process for the catalytically oxidative dehydrogenation of alkyl aromatics or paraffin hydrocarbons to the corresponding alkenyl aromatics or olefins by means of a redox catalyst (oxygen vehicle) in which in a first reaction stage the alkyl aromatic or paraffin hydrocarbon (educt) is dehydrogenated on a titanium dioxide carrier in the absence of molecular oxygen with a catalyst of a reducible metal oxide selected from the oxides of Bi, V, Ce, Fe, In, Ag, Cu, Co, Mn, Pb, Sn, Mo, Sb, As, W or their mixtures, whereby the catalyst is reduced, and in a second reaction stage the reduced catalyst is reoxidised by an oxidising agent.

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