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    1.
    发明专利
    未知

    公开(公告)号：DE19709392A1

    公开(公告)日：1998-09-10

    申请号：DE19709392

    申请日：1997-03-07

    Applicant: BASF AG

    Inventor： MARTIN FRIEDRICH-GEORG DR ,  SCHRAUT ARMIN DR ,  ULBRICH MICHAEL-DIETER DR

    IPC: C07C51/48 ,  C07C57/04 ,  C07C57/07

    Abstract: The invention relates to a method for extracting an aqueous solution containing (meth)acrylic acid. Said solution is brought into contact with a solution containing at least one extracting agent which can be converted into (meth)acrylic acid and forms a miscibility gap with the aqueous solution to produce an organic phase containing (meth)acrylic acid and extraction agent and an aqueous phase.

    Compositions of the general formula Mo12PaVbX<1>cX<2>d X<3>eSbfRegShOn
    4.
    发明专利
    Compositions of the general formula Mo12PaVbX<1>cX<2>d X<3>eSbfRegShOn 未知

    公开(公告)号：DE4329906A1

    公开(公告)日：1995-03-09

    申请号：DE4329906

    申请日：1993-09-04

    Applicant: BASF AG

    Inventor： MARTIN FRIEDRICH-GEORG DR

    IPC: B01J27/186 ,  B01J27/199 ,  C01B25/08 ,  C01B25/45 ,  C07B61/00 ,  C07C51/25 ,  C07C57/055 ,  C01B25/37 ,  C01G39/00

    Abstract: Compositions of the general formula I Mo12PaVbX cX dX eSbf RegShOn (I), in which the variables have the following meanings: X is potassium, rubidium and/or caesium (cesium), X is copper and/or silver, X is cerium, boron, zirconium, manganese and/or bismuth, a is from 0.5 to 3.0, b is from 0.65 to 1.1, c is from 1.1 to 1.5, d is from 0.01 to 2.0, e is from 0 to 2.0, f is from 0.01 to 2.0, g is from 0 to 1.0, h is from 0.001 to 0.5 and n is a number which is determined by the valency and amount of the elements different from oxygen in I. These compositions are suitable as catalysts for preparing methacrylic acid by catalytic gas-phase oxidation of methacrolein.

    6.
    发明专利
    未知

    公开(公告)号：DE59505873D1

    公开(公告)日：1999-06-17

    申请号：DE59505873

    申请日：1995-02-09

    Applicant: BASF AG

    Inventor： MARTIN FRIEDRICH-GEORG DR ,  HIBST HARTMUT DR ,  TENTEN ANDREAS DR

    IPC: C01G1/00 ,  B01J23/88 ,  B01J23/885 ,  B01J27/14 ,  B01J27/195 ,  B01J27/199 ,  B01J35/00 ,  C01G1/02 ,  C01G39/00 ,  C07B61/00 ,  C07C51/25 ,  C07C57/055

    Abstract: Multimetal oxide compsn. of formula (I) is new: (A)p(B)q(I): A = Mo12X aX bX cX dSeX fO x; B = X 12CugX hOy; X = P, As, B, Ge and/or Si; X = V, Nb and/or W; X = H, up to 97 mole-% of which may be replaced by K, Rb, Cs and/or NH4; X = Sb and/or Bi; X = Re and/or Rh; X = Mp, W, Nb and/or Ta; X = Li, Na, K, Rb, Cs and/or NH4; a = 1-6; b, d = 0-6; c = 3-5; e, f = 0-3; g = 4-24; h = 0-20; x, y = values depending on the valency and content of elements other than O; p, q = values other than O, with the ratio p/q = 12:0.1 to 12:48. The A and B fractions are each in the form of 3D zones, which differ in chemical compsn. from their local surroundings, and the relative distribution of the A and B zones is as in a mixt. of finely-divided A and finely-divided B.

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