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    Long-term operation of heterogeneously catalyzed gas phase partial oxidation of acrolein to acrylic acid, by interrupting gas phase partial oxidation
    61.
    发明专利
    Long-term operation of heterogeneously catalyzed gas phase partial oxidation of acrolein to acrylic acid, by interrupting gas phase partial oxidation 未知

    公开(公告)号：DE10350822A1

    公开(公告)日：2005-06-02

    申请号：DE10350822

    申请日：2003-10-29

    Applicant: BASF AG

    Inventor： DIETERLE MARTIN ,  PETZOLDT JOCHEN ,  MUELLER-ENGEL KLAUS JOACHIM

    IPC: C07C51/25 ,  C07C57/055 ,  B01J23/16

    Abstract: Long-term operation of a heterogeneously catalyzed gas phase partial oxidation of acrolein to acrylic acid comprises interrupting gas phase partial oxidation once before temperature increase of fixed catalyst bed is permanently >=10[deg]C, and, at a temperature of fixed catalyst bed of 200-450[deg]C, conducting an acrolein-free, oxidizing gas mixture comprising molecular oxygen, and inert gas through the fixed catalyst bed. Long-term operation of a heterogeneously catalyzed gas phase partial oxidation of acrolein to acrylic acid, comprises conducting a starting reaction gas mixture which comprises acrolein, molecular oxygen and inert diluent gas through a fixed catalyst bed at elevated temperature whose catalysts are such that their active composition is multimetal oxide that contains molybdenum (Mo) and vanadium (V), and by, to counteract the deactivation of the fixed catalyst bed, increasing the temperature of the fixed catalyst bed over time, which comprises interrupting the gas phase partial oxidation once before the temperature increase of the fixed catalyst bed is permanently >=10[deg]C, and, at a temperature of the fixed catalyst bed of 200-450[deg]C, conducting an acrolein-free, oxidizing gas mixture comprising molecular oxygen, inert gas and optionally steam and also optionally carbon monoxide (CO) through the fixed catalyst bed.

    Heterogeneous catalyzed gas phase partial oxidation of propene to acrylic acid, useful for polymers and adhesives, comprises processing a reaction mixture using two fixed catalyst beds comprising four separate reaction zones in series
    63.
    发明专利
    Heterogeneous catalyzed gas phase partial oxidation of propene to acrylic acid, useful for polymers and adhesives, comprises processing a reaction mixture using two fixed catalyst beds comprising four separate reaction zones in series 未知

    公开(公告)号：DE10313208A1

    公开(公告)日：2004-10-07

    申请号：DE10313208

    申请日：2003-03-25

    Applicant: BASF AG

    Inventor： DIETERLE MARTIN ,  PETZOLDT JOCHEN ,  MUELLER-ENGEL KLAUS JOACHIM ,  ARNOLD HEIKO

    IPC: B01J23/00 ,  B01J23/887 ,  B01J35/00 ,  B01J37/02 ,  C07C51/25 ,  C07C57/05 ,  B01J23/84 ,  C07C27/14

    Abstract: Heterogeneous catalyzed gas phase partial oxidation of propene to acrylic acid comprises processing a reaction mixture using a fixed catalyst bed comprising two separate reaction zones in series, A and B maintained at 290-380[deg]C and where active mass comprises a multimetal oxide of Mo, Fe and Bi followed by a second fixed catalyst bed separated into 2 reaction zones C and D at 230-320[deg]C comprising a multimetal oxide of Mo and V. A process for the heterogeneous catalyzed partial oxidation of propene to acrylic acid in the gas phase comprises processing a reaction mixture comprising propene, molecular oxygen and at least one inert gas having a molar ratio of O 2 to C 3H 6 of at least 1 in a first reaction stage using a fixed catalyst bed. The fixed bed comprises two separate reaction zones in series, A and B maintained at 290-380[deg]C. The catalyst active mass comprises a multimetal oxide of Mo, Fe and Bi such that zone A results in a propene conversion of 40-80 mol.% and a single pass through the total catalyst bed results in a greater than 90 mol.% propene conversion with a selectivity to acrolein of greater than 90 mol.%. The process features optional cooling of the mixture leaving the first reaction stage and optional addition of molecular oxygen and/or inert gas. The product mixture comprises acrolein, molecular oxygen and at least one inert gas to form a second reaction mixture having a molar ratio of O 2:C 3H 4O of at least 0.5 that is fed to a second fixed catalyst bed. The second fixed catalyst bed is separated into two reaction zones C and D at 230-320[deg]C comprising a multimetal oxide of Mo and V. The conversion of acrolein in zone C is 45-85 mol.% and the acrolein conversion over the second bed is at least 90 mol.% with a selectivity (propene to acrylic acid) of greater than 80 mol.%. The reaction mixture passes through the zones corresponding to their alphabetical order and is characterized by in the first fixed bed: (i) a reaction gas loading of 90-160 Nl propene per liter of fixed catalyst bed per hour; (ii) the volume specific activity of the fixed catalyst bed in the flow direction of the reaction mixture is either constant or increases at least once; and (iii) the difference between the maximum temperatures in zone A and B is at least 0[deg]C The second fixed bed features: a reaction gas feed of 70-145 Nl acrolein per liter of bed per hour; at least one increase in the volume specific activity of the second catalyst bed in the direction of flow; and a difference between the maximum temperature in C and D of at least 0[deg]C.

    Heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid, useful for the production of adhesive, comprises use of a gas phase mixture having a molar ratio of oxygen to propene of 1.5-2.5
    64.
    发明专利
    Heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid, useful for the production of adhesive, comprises use of a gas phase mixture having a molar ratio of oxygen to propene of 1.5-2.5 未知

    公开(公告)号：DE10313209A1

    公开(公告)日：2004-03-04

    申请号：DE10313209

    申请日：2003-03-25

    Applicant: BASF AG

    Inventor： DIETERLE MARTIN ,  PETZOLDT JOCHEN ,  MUELLER-ENGEL KLAUS JOACHIM ,  MARTAN HANS

    IPC: C07C51/25 ,  C07C57/05

    Abstract: A process for the heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid by passage of a gas phase mixture comprising 6-15 vol.% propene, 4-20 vol. % water and no greater than 10 vol. % of other components as well as molecular oxygen such that the molar ratio of oxygen to propene is 1.5-2.5 and the residual amount to 100 vol.% comprises molecular nitrogen though a first reaction stage. A process for the heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid by passage of a gas phase mixture (I) comprising propene, molecular oxygen and at least one inert gas having a molar ratio of oxygen to propene of at least 1. The process involves a first reaction stage at elevated temperature having a fixed catalyst bed of ring shaped catalyst having a multimetal oxide active material of formula (1). The catalyst has a volume specific activity in the flow direction of the mixture (I) which is either constant or at least increases once and the active mass composition does not change over the bed packing such that the conversion of propene is at last 90 mol.% in a single pass with a selectivity to acrolein and acrylic acid of at least 90 mol.% with direct or indirect cooling of the product mixture leaving the first reaction stage. Optional addition of molecular oxygen and/or inert gas and the product mixture comprising acrolein, molecular oxygen and at least one inert gas having a molar ratio of oxygen to acrolein of at least 0.5 is passed through a second reaction stage comprising a second fixed bed catalyst packing comprising ring shaped packing whose active mass comprises a multimetal oxide of formula (2). Multimetal oxide (2) whose volume specific activity in the direction of flow at least increases once and whose composition does not alter over the second reaction stage such that the single-pass conversion of acrolein is at least 90 mol.% and the selectivity of both reaction stages to the formation of acrylic acid (with respect to reacted propene) is at least 80 mol.% is characterized in that the reaction mixture (I) comprises 6-15 vol.% propene, 4-20 vol.% water and no greater than 10 vol. % of other components that are not propene, water, oxygen or nitrogen, as well as molecular oxygen such that the molar ratio of oxygen to propene is 1.5-2.5 and the residual amount to 100 vol.% comprises molecular nitrogen. Mo12X1aX2bX3cX4dX5eOn (1) Mo12VfX6gX7hOm (2) X1 = Bi, Co or Ni; X2 = W or Nb; X3 = Fe or Cr; X4 = K, Cs or Sr; X5 = Si, Al or Zr; X6 = W or Nb; X7 = Sb, Cu, Ni or Fe; a = 5-10; b = 0-4; c = 2-5; d = 0.02-0.15; e = 0.5-4; f = 1-5; g = 1-2; h = 1-4; m, n = number of O atoms dependent upon the valency and number of elements.

    Production of catalyst with shell of catalytically-active oxide used e.g. in gas phase oxidation of propene to acrolein uses support with ring geometry
    67.
    发明专利
    Production of catalyst with shell of catalytically-active oxide used e.g. in gas phase oxidation of propene to acrolein uses support with ring geometry 未知

    公开(公告)号：DE10059713A1

    公开(公告)日：2002-06-06

    申请号：DE10059713

    申请日：2000-12-01

    Applicant: BASF AG

    Inventor： PETZOLDT JOCHEN ,  UNVERRICHT SIGNE ,  ARNOLD HEIKO

    IPC: B01J23/887 ,  B01J37/02 ,  C07C45/35 ,  C07C47/22

    Abstract: Production of catalyst with support having ring geometry and shell of catalytically-active oxide (I) containing molybdenum, bismuth, iron plus cobalt and/or nickel and optionally other elements involves producing dry mixture of starting materials for (I), thermal treatment at 150-350 deg C to give precursor mass, moistening support with water, contacting with mass to form coating, drying and calcination at 400-600 deg C. Production of a catalyst with support having ring geometry and shell of catalytically-active oxide of formula (I), containing molybdenum (Mo), bismuth (Bi), iron (Fe) plus cobalt (Co) and/or nickel (Ni) and optionally other elements, by producing intimate dry mixture of starting materials for (I), thermal treatment at 150-350 deg C to give precursor mass, moistening support with water, contacting it with this mass to form coating, drying and calcination at 400-600 deg C. X = cobalt (Co) and/or nickel (Ni); X = silicon (Si) and/or aluminum (Al); X = lithium (Li), sodium (Na), potassium (K), cesium (Cs) and/or rubidium (Rb); a = 0.2-1; b = 2-10; c = 0.5-10; d = 0-10; e = 0-0.5; y = value giving neutral charge, depending on valency and frequency of elements other than oxygen (O). An Independent claim is also included for catalysts produced in this way.

    processo para a preparação de pelo menos um composto alvo orgânico, e, aparelho
    68.
    发明专利
    processo para a preparação de pelo menos um composto alvo orgânico, e, aparelho 未知

    公开(公告)号：BRPI0607566B1

    公开(公告)日：2016-03-29

    申请号：BRPI0607566

    申请日：2006-03-01

    Applicant: BASF AG

    Inventor： PETZOLDT JOCHEN ,  MÜLLER-ENGEL KLAUS JOACHIM ,  DIETERLE MARTIN ,  HAMMON ULRICH

    IPC: C07C57/05

    Abstract: processo para a preparação de pelo menos um composto alvo orgânico, e, aparelho. a invenção refere-se a um processo para a produção de um composto alvo orgânico pela realização de uma oxidação parcial em fase gasosa heterogeneamente catalisada em um composto precursor orgânico com oxigénio molecular nos percursos de reator de oxidação que são operados em paralelo, e eliminação do composto alvo da mistura dos fluxos de gás de produto em um percurso de reprocessamento. o catalisador alimentado a um dos percursos de oxidação contém uma quantidade parcial de catalisador na qual a oxidação parcial em fase gasosa heterogeneamente catalisada já tenha sido realizada em mais que as quantidades parcial de catalisador alimentado para o outro percurso de reator de oxidação.

    69.
    发明专利
    未知

    公开(公告)号：BRPI0406992B1

    公开(公告)日：2015-03-03

    申请号：BRPI0406992

    申请日：2004-03-20

    Applicant: BASF AG

    Inventor： DIETERLE MARTIN ,  PETZOLDT JOCHEN ,  MUELLER-ENGEL KLAUS JOACHIM ,  MARTAN HANS

    IPC: C07C51/25 ,  C07C57/04

    Abstract: A process for the heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid by passage of a gas phase mixture comprising 6-15 vol.% propene, 4-20 vol. % water and no greater than 10 vol. % of other components as well as molecular oxygen such that the molar ratio of oxygen to propene is 1.5-2.5 and the residual amount to 100 vol.% comprises molecular nitrogen though a first reaction stage. A process for the heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid by passage of a gas phase mixture (I) comprising propene, molecular oxygen and at least one inert gas having a molar ratio of oxygen to propene of at least 1. The process involves a first reaction stage at elevated temperature having a fixed catalyst bed of ring shaped catalyst having a multimetal oxide active material of formula (1). The catalyst has a volume specific activity in the flow direction of the mixture (I) which is either constant or at least increases once and the active mass composition does not change over the bed packing such that the conversion of propene is at last 90 mol.% in a single pass with a selectivity to acrolein and acrylic acid of at least 90 mol.% with direct or indirect cooling of the product mixture leaving the first reaction stage. Optional addition of molecular oxygen and/or inert gas and the product mixture comprising acrolein, molecular oxygen and at least one inert gas having a molar ratio of oxygen to acrolein of at least 0.5 is passed through a second reaction stage comprising a second fixed bed catalyst packing comprising ring shaped packing whose active mass comprises a multimetal oxide of formula (2). Multimetal oxide (2) whose volume specific activity in the direction of flow at least increases once and whose composition does not alter over the second reaction stage such that the single-pass conversion of acrolein is at least 90 mol.% and the selectivity of both reaction stages to the formation of acrylic acid (with respect to reacted propene) is at least 80 mol.% is characterized in that the reaction mixture (I) comprises 6-15 vol.% propene, 4-20 vol.% water and no greater than 10 vol. % of other components that are not propene, water, oxygen or nitrogen, as well as molecular oxygen such that the molar ratio of oxygen to propene is 1.5-2.5 and the residual amount to 100 vol.% comprises molecular nitrogen. Mo12X1aX2bX3cX4dX5eOn (1) Mo12VfX6gX7hOm (2) X1 = Bi, Co or Ni; X2 = W or Nb; X3 = Fe or Cr; X4 = K, Cs or Sr; X5 = Si, Al or Zr; X6 = W or Nb; X7 = Sb, Cu, Ni or Fe; a = 5-10; b = 0-4; c = 2-5; d = 0.02-0.15; e = 0.5-4; f = 1-5; g = 1-2; h = 1-4; m, n = number of O atoms dependent upon the valency and number of elements.

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