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    44.
    发明专利
    未知

    公开(公告)号：BRPI0511970A

    公开(公告)日：2008-01-22

    申请号：BRPI0511970

    申请日：2005-06-14

    Applicant: BASF AG

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

    IPC: C01G31/00 ,  B01J23/00 ,  B01J23/68 ,  B01J27/198

    Abstract: Multimetal oxides corresponding to the general formula (I), processes for their preparation, precatalysts containing such oxides and catalysts made therefrom for gas phase partial oxidation of hydrocarbons: Ag a-c Q b M c V 12 O d .eH 2 O (I) wherein a represents a number having a value of 5 to 9; Q represents an element selected from the group consisting of P, As, Sb, Bi and mixtures thereof; b represents a number having a value of 0.2 to 3; M represents a metal selected from the group consisting of Li, Na, K, Rb, Cs, Tl, Mg, Ca, Sr, Ba, Cu, Zn, Cd, Pb, Cr, Au, Al, Fe, Co, Ni, Ce, Mn, Nb, W, Ta, Mo and mixtures thereof; c represents a number having a value of less than 1; d represents a number having a value of which is determined by the valency and frequency of Ag, Q, M and V in the formula (I); and e represents a number having a value of 0 to 20; wherein the multimetal oxide has a crystal structure wherein its powder X-ray diffractogram includes reflections at at least 5 interplanar spacings selected from the group of 7.13 Å, 5.52 Å, 5.14 Å, 3.57 Å, 3.25 Å, 2.83 Å, 2.79 Å, 2.73 Å, 2.23 Å and 1.71 Å, each interplanar spacing value±0.04 Å.

    47.
    发明专利
    未知

    公开(公告)号：DE50202497D1

    公开(公告)日：2005-04-21

    申请号：DE50202497

    申请日：2002-07-17

    Applicant: BASF AG

    Inventor： HIBST HARTMUT ,  NOE RALF ,  EXNER MICHAEL ,  DUDA MARK

    IPC: C07B61/00 ,  C07D307/60

    Abstract: A process for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of an n-butene-containing hydrocarbon stream by means of oxygen-containing gases in a shell-and-tube reactor having two successive reaction zones, where the first, feed-side reaction zone contains at least one catalyst which is suitable for the oxydehydrogenation of n-butenes to 1,3-butadiene and the second, product-side reaction zone contains at least one catalyst which is suitable for the oxidation of 1,3-butadiene to maleic anhydride, is carried out using a shell-and-tube reactor which has at least one heat transfer medium circuit in the region of the first, feed-side reaction zone and at least one further heat transfer medium circuit in the region of the second, product-side reaction zone.

    48.
    发明专利
    未知

    公开(公告)号：BR0311949A

    公开(公告)日：2005-03-22

    申请号：BR0311949

    申请日：2003-07-10

    Applicant: BASF AG

    Inventor： SCHINDLER GUTZ-PETER ,  WALSDORFF CHRISTIAN ,  HARTH KLAUS ,  HIBST HARTMUT

    IPC: B01J23/62 ,  C07B61/00 ,  C07C5/333 ,  C07C11/167

    Abstract: The invention relates to a process for preparing butadiene from n-butane comprising the steps (A) providing an n-butane-containing feed gas stream, (B) feeding the n-butane-containing feed gas stream into a first dehydrogenation zone and nonoxidatively catalytically dehydrogenating n-butane to 1-butene, 2-butene and optionally butadiene to obtain a first product gas stream comprising n-butane, 1-butene and 2-butene, with or without butadiene and secondary components, (C) feeding the first product gas stream comprising n-butane, 1-butene and 2-butene, with or without butadiene and secondary components, into a second dehydrogenation zone and oxidatively dehydrogenating 1-butene and 2-butene to butadiene to give a second product gas stream comprising butadiene, n-butane and steam, with or without secondary components, (D) recovering butadiene from the second product gas stream.

    Preparing a multielement oxide material useful as catalyst active material, by thermally treating dry blend of ammonium ions and elemental components of oxide material, other than oxygen in atmosphere having low content of molecular oxygen
    50.
    发明专利
    Preparing a multielement oxide material useful as catalyst active material, by thermally treating dry blend of ammonium ions and elemental components of oxide material, other than oxygen in atmosphere having low content of molecular oxygen 未知

    公开(公告)号：DE10325488A1

    公开(公告)日：2004-12-23

    申请号：DE10325488

    申请日：2003-06-04

    Applicant: BASF AG

    Inventor： DIETERLE MARTIN ,  HIBST HARTMUT ,  POEPEL WOLFGANG JUERGEN ,  PETZOLDT JOCHEN

    IPC: B01J23/00 ,  B01J23/887 ,  B01J23/888 ,  B01J35/00 ,  B01J37/08 ,  C07C51/215 ,  C07C51/235 ,  B01J23/88 ,  C01G31/02 ,  C01G33/00 ,  C01G39/02 ,  C01G41/02

    Abstract: Preparation of catalytically active multielement oxide materials containing niobium and/or tungsten, molybdenum, vanadium, and copper, includes thermally treating a dry blend containing ammonium ions and the elemental components of oxide material, other than oxygen at elevated temperature in an atmosphere having low content of molecular oxygen. A portion of ammonium ions in the dry blend is decomposed at >=160[deg]C with liberation of ammonia. Preparation of catalytically active multielement oxide materials containing niobium and/or tungsten, molybdenum, vanadium, and copper, includes thermally treating a dry blend containing ammonium ions and the elemental components of multielement oxide material, other than oxygen at elevated temperature in an atmosphere having a low content of molecular oxygen. A portion of ammonium ions contained in the dry blend is decomposed at >=160[deg]C with liberation of ammonia. Thermal treatment includes heating the dry blend at =10[deg]C/minute to a decomposition temperature (preferably 240-360[deg]C) and holding at this temperature until >=90 mole% of the total amount of ammonia liberated in the entire course of thermal treatment have been liberated; reducing the molecular content in the atmosphere where thermal treatment takes place is reduced to =0.5 vol.% not later than when the intimate dry blend has reached 230[deg]C and maintaining this low oxygen content until >=20 mole% of the total amount of ammonia liberated in the entire course of thermal treatment have been liberated; taking the dry blend at =10[deg]C/minute out of the decomposition temperature and into the calcination temperature of 380-450[deg]C not earlier than when >=70 mole% of the total amount of ammonia liberated in the entire course of thermal treatment have been liberated; and increasing the content of molecular oxygen in the atmosphere to greater than 0.5-4 vol.% not later than when 98 mole% of the total amount of ammonia liberated in the entire course of thermal treatment have been liberated, and calcining the dry blend at this increased oxygen content of atmosphere in the calcination temperature. The molar fraction of molybdenum is 20-80 mole%, based on the total amount of all elements other than oxygen in the multielement oxide material. The molar ratio of molybdenum to vanadium is 15:1 - 1:1. The molar ratio of molybdenum to copper is 30:1 - 1:3. The molar ratio of molybdenum to the total amount of tungsten and niobium is 80:1 - 1:4.

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