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    METHOD FOR PRODUCING (METH)ACRYLIC ACID AND (METH)ACRYLIC ACID ESTERS
    1.
    发明申请
    METHOD FOR PRODUCING (METH)ACRYLIC ACID AND (METH)ACRYLIC ACID ESTERS 审中-公开
    工艺制备（甲基）丙烯酸和（甲基）丙烯酸酯

    公开(公告)号：WO9950221A3

    公开(公告)日：1999-12-02

    申请号：PCT/EP9901997

    申请日：1999-03-24

    Applicant: BASF AG ,  AICHINGER HEINRICH ,  MARTAN HANS ,  NESTLER GERHARD

    Inventor： AICHINGER HEINRICH ,  MARTAN HANS ,  NESTLER GERHARD

    IPC: C07C27/02 ,  C07C51/44 ,  C07C51/487 ,  C07C51/50 ,  C07C53/10 ,  C07C57/07 ,  C07C57/075 ,  C07C67/08 ,  C07C69/14 ,  C07C69/54 ,  C07C57/04

    CPC classification number: C07C51/50 ,  B01D3/225 ,  C07C51/44 ,  C07C51/487 ,  C07C67/08 ,  C07C57/04 ,  C07C69/54

    Abstract: The invention relates to a method for producing pure (meth)acrylic acid from a crude (meth)acrylic acid, comprising the following steps: A. treating the crude (meth)acrylic acid with at least one compound which is capable of removing aldehyde in order to obtain an aldehyde-free crude (meth)acrylic acid; B. subjecting the aldehyde-free crude (meth)acrylic acid to an imprecise distillation process, which produces a light-boiling fraction containing (meth)acrylic acid and acetic acid and a heavy-boiling fraction containing high boilers; C. separating off a pure (meth)acrylic acid from the heavy-boiling fractions and optionally, D. esterifying the light-boiling fraction containing (meth)acrylic acid and acetic acid obtained in B with one or more alkanols to produce an esterification mixture containing one or more (meth)acrylic acid esters, one or more acetic acid esters and one or more alkanols.

    Abstract translation: A：一种用于制备纯的（甲基）丙烯酸从粗（甲基）丙烯酸原料，其包括以下阶段过程处理粗（甲基）丙烯酸与至少一种化合物，其能够醛的 除去，其中获得一个无醛的粗（甲基）丙烯酸; B：使所述无醛的粗（甲基）丙烯酸模糊蒸馏，从而获得（甲基）丙烯酸和丙烯酸含有乙酸，低沸点级分和（甲基）和高沸点沸点馏分包括获得; C：从高沸点馏分和任选的d纯（甲基）丙烯酸的分离：在阶段B中获得的产物的丙烯酸酯化（甲基）和含由一个或多个链烷醇的手段低沸点馏分乙酸，由此包括一个或多个的酯化混合物，（甲基）丙烯酸酯， 一个或多个乙酸酯和一种或多种链烷醇被获得。

    METHOD FOR THE HETEROGENEOUSLY CATALYZED PARTIAL GAS PHASE OXIDATION OF PROPENE INTO ACRYLIC ACID
    3.
    发明申请
    METHOD FOR THE HETEROGENEOUSLY CATALYZED PARTIAL GAS PHASE OXIDATION OF PROPENE INTO ACRYLIC ACID 审中-公开
    METHOD丙烯的非均相催化部分气相氧化成丙烯酸

    公开(公告)号：WO2004085368A2

    公开(公告)日：2004-10-07

    申请号：PCT/EP2004002931

    申请日：2004-03-20

    Applicant: BASF AG ,  DIETERLE MARTIN ,  PETZOLDT JOCHEN ,  MUELLER-ENGEL KLAUS JOACHIM ,  MARTAN HANS

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

    IPC: C07C51/25 ,  C07C57/05

    CPC classification number: C07C51/252 ,  C07C57/04

    Abstract: Disclosed is a method for the heterogeneously catalyzed partial gas phase oxidation of propene into acrylic acid, according to which a specifically composed initial reaction gas mixture containing propene and oxygen is oxidized on a first fixed catalyst bed having a constant or increasing volume-specific activity in the direction of flow in a first reaction stage. The resulting gas mixture of the first reaction stage, which contains acrolein, is then oxidized on a second fixed catalyst bed having an increasing volume-specific activity in the direction of flow in a second reaction stage. The molded catalyst bodies of both fixed catalyst beds have an annular shape and are respectively provided with a specific multimetal oxide composition.

    Abstract translation: 一种用于丙烯的非均相催化部分气相氧化成丙烯酸，其中enthaitendes特定复合物，丙烯和氧气，在具有恒定或增加比容活性的流动方向被氧化，然后第一的含丙烯醛的产物气体混合物的第一固定催化剂床在第一反应阶段中的起始反应气体混合物处理 反应阶段是在第二反应阶段在流比容活性的方向上的第二固定催化剂床的增加，其中两个固定催化剂床的催化剂体是环形的氧化，并且每一个都具有特定MULTIME talloxidzusammensetzung。

    5.
    发明专利
    未知

    公开(公告)号：BRPI0406992A

    公开(公告)日：2006-01-10

    申请号：BRPI0406992

    申请日：2004-03-20

    Applicant: BASF AG

    Inventor： DIETERLE MARTIN ,  PETZOLDT JOCHEN ,  LLER-ENGEL KLAUS JOACHIM M ,  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.

    (Meth)acrylic acid production in high yield, for use as monomer, by gas-phase oxidation of saturated hydrocarbon precursor(s) over two beds of mixed metal oxide catalysts with specific selectivity properties
    6.
    发明专利
    (Meth)acrylic acid production in high yield, for use as monomer, by gas-phase oxidation of saturated hydrocarbon precursor(s) over two beds of mixed metal oxide catalysts with specific selectivity properties 未知

    公开(公告)号：DE10344265A1

    公开(公告)日：2004-10-28

    申请号：DE10344265

    申请日：2003-09-23

    Applicant: BASF AG

    Inventor： BORGMEIER FRIEDER ,  ROSOWSKI FRANK ,  MARTAN HANS ,  MUELLER-ENGEL KLAUS JOACHIM

    IPC: B01J23/00 ,  B01J23/28 ,  B01J23/887 ,  B01J27/057 ,  B01J35/00 ,  B01J37/00 ,  C07C51/215 ,  C07C57/05 ,  B01J23/64

    Abstract: In the production of (meth)acrylic acid ((M)AA) by passing a gaseous mixture of saturated hydrocarbon precursor(s) (SHP's), oxygen and inert gas through a reactor charged with a mixed metal oxide catalyst (M) containing molybdenum and vanadium, (M) is contained in two beds (I) and (II) of different composition, spaced in the flow direction, having specific selectivity properties on increasing the temperature. Production of (meth)acrylic acid ((M)AA) by heterogeneous gas-phase oxidation at elevated temperature involves passing a gaseous mixture of saturated hydrocarbon precursor(s) (SHP's), oxygen and inert gas(es) at initial pressure P through a reactor charged with a catalyst comprising (as active mass) a mixed metal oxide (M) containing molybdenum and vanadium, at least one of tellurium, antimony and bismuth and at least one of niobium, tantalum, tungsten, cerium and titanium and having an X-ray diffractogram peaks at 2tau values of 22.2 +- 0.5[deg] (h) (strongest peak; half-value breadth at most 0.5[deg]), 27.3 +- 0.5[deg] (i) (half-value breadth 1.0[deg] or less) and 28.2 +- 0.5[deg] (k) (half-value breadth 1.0[deg] or less). The novel feature is that the whole of (M) is contained in two beds (I) and (II) of different composition, spaced in the flow direction. Beds (I) and (II) are such that if the particular bed was the only catalyst present in the same reactor the respective selectivities S1> and S2> for (M)AA would have maximum values (on increasing the conversion of SHP's by increasing the temperature under otherwise identical conditions on a single pass of gas through the reactor) of S1>max and S2>max respectively, where S1>max occurs at lower SHP conversion than S2>max and at an increasing SHP conversion S1> is less than S2>, whereas S1>max is more than S2>max.

    7.
    发明专利
    未知

    公开(公告)号：DE19814449A1

    公开(公告)日：1999-10-07

    申请号：DE19814449

    申请日：1998-03-31

    Applicant: BASF AG

    Inventor： AICHINGER HEINRICH ,  MARTAN HANS ,  NESTLER GERHARD

    IPC: C07C27/02 ,  C07C51/44 ,  C07C51/487 ,  C07C51/50 ,  C07C53/10 ,  C07C57/04 ,  C07C57/07 ,  C07C57/075 ,  C07C67/08 ,  C07C69/14 ,  C07C69/54

    Abstract: The invention relates to a method for producing pure (meth)acrylic acid from a crude (meth)acrylic acid, comprising the following steps: A. treating the crude (meth)acrylic acid with at least one compound which is capable of removing aldehyde in order to obtain an aldehyde-free crude (meth)acrylic acid; B. subjecting the aldehyde-free crude (meth)acrylic acid to an imprecise distillation process, which produces a light-boiling fraction containing (meth)acrylic acid and acetic acid and a heavy-boiling fraction containing high boilers; C. separating off a pure (meth)acrylic acid from the heavy-boiling fractions and optionally, D. esterifying the light-boiling fraction containing (meth)acrylic acid and acetic acid obtained in B with one or more alkanols to produce an esterification mixture containing one or more (meth)acrylic acid esters, one or more acetic acid esters and one or more alkanols.

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