中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

55 records (took 0.021 seconds)

    21.
    发明专利
    未知

    公开(公告)号：BRPI0410551B1

    公开(公告)日：2014-11-18

    申请号：BRPI0410551

    申请日：2004-05-15

    Applicant: BASF AG

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

    IPC: C07C51/31 ,  C07C51/21 ,  C07C51/265 ,  C07D307/89

    Abstract: The invention relates to a process for preparing phthalic anhydride, in which the catalytic gas-phase oxidation of o-xylene and/or naphthalene is carried out over at least three zones of catalysts of increasing activity, with only the last zone of the catalyst system containing phosphorus and the last zone also comprising at least 10% by weight of vanadium (calculated as V 2 O 5 ) based on the active composition of the catalyst and having a ratio of vanadium (calculated as V 2 O 5 ) to phosphorus of greater than 35.

    24.
    发明专利
    未知

    公开(公告)号：DE102005061382A1

    公开(公告)日：2007-06-28

    申请号：DE102005061382

    申请日：2005-12-21

    Applicant: BASF AG

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

    IPC: B01J37/08 ,  B01J23/68

    Abstract: A process is described for converting a precatalyst which comprises an inert support, an organic carbon source and a multimetal oxide comprising silver and vanadium to a gas phase oxidation catalyst which comprises the inert support and a catalytically active silver vanadium oxide bronze, by treating the precatalyst thermally at a temperature of at least 350° C. in a gas atmosphere which comprises less than 10% by volume of oxygen, wherein, before the thermal treatment, the amount of the carbon source in the precatalyst is adjusted to a value below a critical amount The carbon content is reduced by burning-off at a temperature of from 80 to 200° C. in an oxygenous atmosphere with decomposition of a portion of the carbon source. The catalysts obtained serve for the gas phase partial oxidation of aromatic hydrocarbons to aldehydes, carboxylic acids and/or carboxylic anhydrides.

    PROCEDIMIENTO PARA LA OBTENCION DE ANHIDRIDO DEL ACIDO FTALICO.
    26.
    发明专利
    PROCEDIMIENTO PARA LA OBTENCION DE ANHIDRIDO DEL ACIDO FTALICO. 未知

    公开(公告)号：ES2271890T3

    公开(公告)日：2007-04-16

    申请号：ES04733248

    申请日：2004-05-15

    Applicant: BASF AG

    Inventor： NETO SAMUEL ,  ZUHLKE JURGEN ,  STORCK SEBASTIAN ,  ROSOWSKI FRANK

    IPC: C07C51/21 ,  C07C51/31 ,  C07C51/265 ,  C07D307/89

    Abstract: Procedimiento para la obtención de anhídrido del ácido ftálico mediante oxidación catalítica en fase gaseosa de xileno y/o de naftalina con un gas que contenga oxígeno molecular en un lecho fijo y por medio de catalizadores dispuestos al menos en tres capas superpuestas, cuya actividad aumenta de una capa a otra desde el lado de entrada de los gases hasta el lado de salida de los gases, sobre cuyo núcleo formado por material de soporte se ha dispuesto una capa de óxidos metálicos catalíticamente activos, caracterizado porque únicamente presenta fósforo la última capa del catalizador, presentándose en la última capa, al menos un 10 % en peso de vanadio (calculado como V2O5) referido a la masa activa del catalizador y presentando la proporción entre vanadio (calculado como V2O5) y fósforo un valor mayor que 35.

    28.
    发明专利
    未知

    公开(公告)号：DE102004028930A1

    公开(公告)日：2006-01-05

    申请号：DE102004028930

    申请日：2004-06-15

    Applicant: BASF AG

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

    IPC: B01J23/00 ,  B01J23/68 ,  B01J27/198 ,  C01G1/02 ,  C01G5/00 ,  C01G31/00 ,  C01G31/02

    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.

Patent Agency Ranking