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    MULTI-METAL OXIDES
    54.
    发明专利
    MULTI-METAL OXIDES 未知

    公开(公告)号：CZ336296A3

    公开(公告)日：1997-08-13

    申请号：CZ336296

    申请日：1996-11-15

    Applicant: BASF AG

    Inventor： HIBST HARTMUT PROF DR ,  TENTEN ANDREAS DR ,  MAROSI LASZLO DR

    IPC: C01G1/00 ,  B01J23/00 ,  B01J23/20 ,  B01J23/28 ,  B01J23/30 ,  B01J23/88 ,  B01J23/887 ,  B01J23/888 ,  B01J35/00 ,  C01G31/00 ,  C01G39/00 ,  C01G41/00 ,  C07B61/00 ,  C07C45/33 ,  C07C45/34 ,  C07C45/35 ,  C07C45/38 ,  C07C51/235 ,  C07C51/25 ,  C07C57/05 ,  C07C57/055

    Abstract: A multimetal oxide of formula (I) Mo12-a-b-cVaM bM cOx is new, where: M = tungsten (W) and/or niobium (Nb); M = titanium (Ti), zirconium (Zr), hafnium (Hf), tantalum (Ta), chromium (Cr), silicon (Si) and/or germanium (Ge); a = 0.1-6; b = 0-6; c = 0-6; a+b+c = 0.1-6; and x = number determined by the valency and frequency of the element in (I) except oxygen. Its atomic space arrangement is determined by powder X-ray diffraction (the intensity A of the diffracted X-ray beam as a function of two-fold diffraction angle (2&thetas; )) using Cu-K alpha -radiation ( lambda = 1.54178 Angstrom ), so that in the 2&thetas; region of 5-50 degrees the following diffraction lines are produced: Al(X-ray diffraction line) = 8.3 plus or minus 0.7 (2&thetas; degrees ); A2=14.4 plus or minus 0.7; A3=22.3 plus or minus 0.2; A4=23.5 plus or minus 0.7; A5=27.2 plus or minus 0.4; A6=32.0 plus or minus 0.8; A7=34.8 plus or minus 0.6; A8=38.7 plus or minus 0.5; A9=45.4 plus or minus 0.4; and A10=48.8 plus or minus 0.4. Also claimed are: (i) a process for catalytic gas phase oxidation of organic compounds using the above multimetal oxide; and (ii) a finely divided mixture containing the above multimetal oxide (I) and a multimetal oxide (II) of formula: M 12CudHeOy, where: M = molybdenum (Mo), W, vanadium (V), Nb and/or Ta; d = 4-30; e = 0-20; and y = a number determined by the valency and frequency of the elements in (II) except oxygen.

    Multi:metal oxide useful as catalyst esp. in gas phase oxidn. of acrolein to acrylic acid
    55.
    发明专利
    Multi:metal oxide useful as catalyst esp. in gas phase oxidn. of acrolein to acrylic acid 未知

    公开(公告)号：DE4440891A1

    公开(公告)日：1996-05-23

    申请号：DE4440891

    申请日：1994-11-17

    Applicant: BASF AG

    Inventor： TENTEN ANDREAS DR ,  HIBST HARTMUT DR ,  MARTIN FRIEDRICH-GEORG DR ,  MAROSI LASZLO DR ,  KOHL VERONIKA DR

    IPC: B01J23/00 ,  B01J23/885 ,  B01J23/887 ,  B01J35/00 ,  C07C51/25 ,  C07C57/055 ,  C01G1/02 ,  B01J21/00 ,  C01G39/00 ,  C01G41/00

    Abstract: Multimetal oxide compsn. of formula (I) is new: (A)p (B)q (I): A = Mo12VaX bX cX dX eX fX gOx (co-phase); B = X 12CuhHiOy (key phase); X = W, Nb, Ta, Cr and/or Ce; X = Cu, Ni, Co, Fe, Mn and/or Zn; X = Sb and/or Bi; X = Li, Na, K, Rb, Cs and/or H; X = Mg, Ca, Sr and/or Ba; X = Si, Al, Ti and/or Zr; X = Mo, W, V, Nb and/or Ta; a = 1-8; b = 0.2-5; c = 0-23; d, g = 0-50; e = 0-2; f = 0-5; h = 4-30; i = 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 = 160:1 to 1:1. The A and B fractions are each in the form of 30 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. Also claimed are multimetal oxide compsns. of wolframite structural type, of formulae (II), (III), (IV) and (V): in (II), 1/(A+B+C+D+E) = 0.7-1.3; F = 0-1; and B+C+D+E = over 0 to 1. In (III), 1/(A+B+C) = 0.7-1.3; A, B, C all = more than O and B+C = at most 1; In (IV), 1/(A+B) = 0.7-1.3; A, B both = more than O and B = at most 1; In (V), 1/(A+C) = 0.7-1.3; A, C both more than O and C at most 1.

    56.
    发明专利
    未知

    公开(公告)号：DE3717284A1

    公开(公告)日：1988-12-01

    申请号：DE3717284

    申请日：1987-05-22

    Applicant: BASF AG

    Inventor： MAROSI LASZLO DR

    IPC: C01B21/068 ,  C04B35/58

    Abstract: Silicon nitride powder is prepared in a gas-phase reaction by reacting silicon tetrachloride with ammonia at above 500 DEG C. in a fluidized bed of silicon nitride particles. An amorphous silicon nitride having a BET specific surface area of greater than 50 m2/g is used at the beginning of the reaction. The resulting silicon nitride is then separated from the ammonium chloride simultaneously formed.

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