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    12.
    发明专利
    未知

    公开(公告)号：DE502004003631D1

    公开(公告)日：2007-06-06

    申请号：DE502004003631

    申请日：2004-07-30

    Applicant: BASF AG

    Inventor： NETO SAMUEL ,  ZUEHLKE JUERGEN ,  STORCK SEBASTIAN ,  ROSOWSKI FRANK

    IPC: B01J31/06 ,  B01J21/06 ,  B01J23/22 ,  B01J27/198 ,  B01J37/02 ,  C07C51/215 ,  C07C51/265

    Abstract: A catalyst for gas-phase oxidations which comprises an inert support and a catalytically active composition comprising transition metal oxides applied thereto, or a precatalyst, is described. The (pre)catalyst is obtained by treating the inert support with an aqueous suspension or solution of the transition metal oxides or their precursor compounds, where the suspension contains a binder dispersion and the binder is a copolymer of an alpha-olefin and a vinyl-C 2 -C 4 -carboxylate whose vinyl C 2 -C 4 -carboxylate content is at least 62 mol %.

    14.
    发明专利
    未知

    公开(公告)号：DE502004002687D1

    公开(公告)日：2007-03-08

    申请号：DE502004002687

    申请日：2004-05-21

    Applicant: BASF AG

    Inventor： STORCK SEBASTIAN ,  ZUEHLKE JUERGEN ,  NETO SAMUEL ,  ROSOWSKI FRANK

    IPC: C07C51/265 ,  C07C51/31 ,  C07C63/16

    Abstract: A description is given of a process for preparing aldehydes, carboxylic acids and/or carboxylic anhydrides, in particular phthalic anhydride, in which a gaseous stream comprising an aromatic hydrocarbon and molecular oxygen is passed at elevated temperature over a bed of a first catalyst and a bed which is made up of a second catalyst having a higher activity than the first catalyst and is located downstream of the first catalyst in the flow direction of the gaseous stream, wherein the catalytically active composition of the first catalyst comprises at least vanadium oxide, titanium dioxide and antimony oxide and the ratio of vanadium, calculated as V 2 O 5 , to antimony, calculated as Sb 2 O 3 , in the first catalyst is from 3.5:1 to 5:1. The source of antimony oxide used for the first catalyst is preferably particulate antimony trioxide having a mean particle size of from 0.5 to 5 mum. The process allows the desired oxidation products to be obtained in high yield over longer periods of time.

    16.
    发明专利
    未知

    公开(公告)号：BRPI0414770A

    公开(公告)日：2006-11-21

    申请号：BRPI0414770

    申请日：2004-09-24

    Applicant: BASF AG

    Inventor： NETO SAMUEL ,  RUMMEL WOLFGANG ,  STORCK SEBASTIAN ,  ZUEHLKE JUERGEN ,  ROSOWSKI FRANK

    IPC: B01J2/00 ,  B01J2/16 ,  B01J23/22 ,  B01J35/00 ,  B01J37/00 ,  B01J37/02 ,  C07C51/265

    Abstract: The invention relates to a process for producing a catalyst for gas-phase oxidations, which comprises weighing a particulate inert support having a total mass of M support into a fluidized-bed apparatus, providing an aqueous suspension of a catalytically active material or sources therefor and a binder having a binder content of B susp , fluidizing the inert support by introduction of a gas stream heated to a temperature of T gas at a flow rate of Q gas , and spraying the suspension at a rate of Q susp onto the fluidized inert support. When Q gas , Q susp , B susp , M support and T gas are selected within the ranges 3000 gas [m 3 /h] susp [g/min] susp [% by weight] support [kg] gas [° C.] K=0.020 Q gas -0.055 Q susp +7.500 B susp -0.667 M support +2.069 T gas -7 satisfies the relationship 127.5

    18.
    发明专利
    未知

    公开(公告)号：DE10335346A1

    公开(公告)日：2005-02-24

    申请号：DE10335346

    申请日：2003-08-01

    Applicant: BASF AG

    Inventor： NETO SAMUEL ,  ZUEHLKE JUERGEN ,  STORCK SEBASTIAN ,  ROSOWSKI FRANK

    IPC: B01J21/06 ,  B01J23/22 ,  B01J27/198 ,  B01J37/02 ,  C07C51/265 ,  B01J37/00 ,  B01J27/186

    Abstract: A catalyst for gas-phase oxidations which comprises an inert support and a catalytically active composition comprising transition metal oxides applied thereto, or a precatalyst, is described. The (pre)catalyst is obtained by treating the inert support with an aqueous suspension or solution of the transition metal oxides or their precursor compounds, where the suspension contains a binder dispersion and the binder is a copolymer of an alpha-olefin and a vinyl-C 2 -C 4 -carboxylate whose vinyl C 2 -C 4 -carboxylate content is at least 62 mol %.

    19.
    发明专利
    未知

    公开(公告)号：BR0109070A

    公开(公告)日：2003-06-03

    申请号：BR0109070

    申请日：2001-03-06

    Applicant: BASF AG

    Inventor： WEIGUNY JENS ,  STORCK SEBASTIAN ,  TENTEN ANDREAS ,  RUPPEL WILHELM

    IPC: C07D307/60 ,  B01J27/28 ,  B01J38/04 ,  C07B61/00 ,  C07C51/215

    Abstract: In a process for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of hydrocarbons having at least four carbon atoms using oxygen-containing gases in the presence of a volatile phosphorus compound over a catalyst comprising vanadium, phosphorus and oxygen in a shell-and-tube reactor unit having at least two successive cooled reaction zones, the temperature of the first reaction zone is from 350 to 450° C. and the temperature of the second and further reaction zones is from 350 to 480° C. and the temperature difference between the hottest reaction zone and the coolest reaction zone is at least 2° C.

    20.
    发明专利
    未知

    公开(公告)号：DE10046072A1

    公开(公告)日：2002-03-28

    申请号：DE10046072

    申请日：2000-09-15

    Applicant: BASF AG

    Inventor： STORCK SEBASTIAN ,  WEIGUNY JENS ,  TENTEN ANDREAS

    IPC: B01J27/198 ,  B01J37/16 ,  C07C51/215 ,  C07F11/00 ,  B01J31/12 ,  C07D307/60

    Abstract: The invention relates to a method for producing a catalyst precursor containing vanadium, phosphorus and oxygen, for producing maleic acid anhydride by heterogeneously catalytic gas phase oxidation of a hydrocarbon with at least four carbon atoms, by reacting a pentavalent vanadium compound with a pentavalent phosphorus compound in the presence of an alcohol with a reducing action. According to the inventive method, (i) the alcohol with the reducing action is an alcohol of general formula (I), wherein the radicals R1 and R2, independently of each other, mean hydrogen, C1-to C9-alkyl or C1- to C9-hydroxyalkyl and the radical R3 means C1-to C9-alkyl or C1- to C9-hydroxyalkyl; (ii) the reaction is carried out without adding modifiers and co-reduction agents selected from the following series: hydrogen halide, sulphur dioxide, fuming sulphuric acid and tensides; and (iii) bringing together the pentavalent vanadium compound, the pentavalent phosphorus compound and the alcohol with the reducing action, forming the catalyst precursor by heating and isolating the same. The invention also relates to a catalyst precursor that can be obtained using this method, to a method for producing a catalyst from the catalyst precursor, to a catalyst that can be obtained using this method and to a method for producing maleic acid anhydride on this catalyst.

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