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    13.
    发明专利
    未知

    公开(公告)号：BRPI0710712A2

    公开(公告)日：2011-08-16

    申请号：BRPI0710712

    申请日：2007-04-27

    Applicant: BASF AG

    Inventor： LAUTENSACK THOMAS ,  ALLMANN HANS-MARTIN ,  WILMER HAGEN

    IPC: C07C51/265 ,  B01J23/22 ,  B01J35/00 ,  C07C63/16

    Abstract: Method for gas phase oxidation comprises directing a gaseous flow comprising at least an aromatic hydrocarbon and molecular oxygen through at least two catalyst layers that are arranged in current direction, where the activity of the catalyst in the border of the catalyst layer is different from one another, and arranging a moderator layer between two catalyst layers that are arranged one behind the other in the flow direction of the gaseous flow. Method for gas phase oxidation comprises directing a gaseous flow comprising at least an aromatic hydrocarbon and molecular oxygen through at least two catalyst layers that are arranged in current direction, where the activity of the catalyst in the border of the catalyst layer is different from one another, and arranging a moderator layer between two catalyst layers that are arranged one behind the other in the flow direction of the gaseous flow, where the moderator layer is catalytically less active than the catalysts adjoining upstream and downstream or is catalytically inactive; and the highly active catalyst layer is situated downstream to the moderator layer as the catalyst layer upstream to the moderator layer.

    15.
    发明专利
    未知

    公开(公告)号：ITMI952022A1

    公开(公告)日：1997-04-04

    申请号：ITMI952022

    申请日：1995-10-04

    Applicant: BASF AG

    Inventor： HAGEMEYER ALFRED ,  LAUTENSACK THOMAS ,  WATZENBERGER OTTO ,  DEIMLING AXEL

    IPC: C07B31/00 ,  C07B35/04 ,  C07B61/00 ,  C07C2/84 ,  C07C5/333 ,  C07C5/42 ,  C07C11/02 ,  C07C15/44 ,  C07C45/28 ,  C07C45/65 ,  C07C51/377 ,  C07C57/055 ,  C07C67/39 ,  C07C253/26

    Abstract: A process for the preparation of olefinically unsaturated compounds by catalytic oxidation, ie oxidative dehydrogenation by transferring oxygen from a previously oxidized oxygen carrier acting as catalyst, in the absence of molecular oxygen, the catalyst being regenerated after exhaustion, wherein, during the operating phase of the catalyst (oxidation/dehydration partial step), the residence time, space velocity and/or temperature of the reactants in the reactor is/are adjusted, ie, controlled, continuously or in discrete steps, in a manner appropiate to the momentary state of activity of the redox catalyst by adjusting-continuously or stepwise-the residence time of the reactants in the freshly regenerated catalyst (ie at the commencement of the reaction) to a shorter time, and/or the temperature to a lower value, than the corresponding parameter(s) in the partially reduced catalyst.

    18.
    发明专利
    未知

    公开(公告)号：DE102005026360A1

    公开(公告)日：2006-12-28

    申请号：DE102005026360

    申请日：2005-06-07

    Applicant: BASF AG

    Inventor： NETO SAMUEL ,  ROSOWSKI FRANK ,  STORCK SEBASIEN ,  ZUEHLKE JUERGEN ,  ALLMANN HANS-MARTIN ,  LAUTENSACK THOMAS ,  STEEG RAINER

    IPC: B01J37/08

    Abstract: Processes comprising providing a catalyst precursor, and heating the catalyst precursor to a temperature of at least 350° C. in an atmosphere comprising air, wherein air is fed into the atmosphere at a rate of 0.05 to 4.0 standard m 3 /h, and wherein the catalyst precursor is activated at a temperature of at least 350° C. for more than 9 hours are described along with catalysts formed thereby and uses for such catalysts.

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