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    Acrolein catalytic oxidation process to acrylic acid in a gaseous phase
    14.
    发明专利
    Acrolein catalytic oxidation process to acrylic acid in a gaseous phase 未知

    公开(公告)号：CZ294400B6

    公开(公告)日：2004-12-15

    申请号：CZ229495

    申请日：1995-09-07

    Applicant: BASF AG

    Inventor： RUPPEL WILHELM DR ,  WEGERLE ULRIKE ,  TENTEN ANDREAS DR ,  HAMMON ULRICH DR

    IPC: B01J23/28 ,  B01J8/06 ,  B01J21/02 ,  B01J23/16 ,  C07B61/00 ,  C07C51/25 ,  C07C57/04 ,  C07C57/055

    Abstract: In the present invention, there is described a process for the catalytic gas-phase oxidation of acrolein to acrylic acid in a multiple contact tube fixed-bed reactor through whose space surrounding the contact tubes only one heat-exchange medium circuit is passed, at elevated temperature on catalytically active multimetal oxides with an acrolein conversion for a single pass and an acrylic acid formation selectivity, which comprises firstly passing the heat-exchange medium through the multiple contact tube fixed-bed reactor longitudinally, considered over the reaction container as a whole, to the contact tubes in co-current to the reaction-gas mixture and secondly superposing a transverse flow within the reaction container by means of an arrangement of successive baffles along the contact tubes which leaves passage cross sections free, so as to give a meandrous flow of the heat-exchange medium, seen in longitudinal section through the contact tube bundle, and setting the flow rate of the circulated heat-exchange medium so that its temperature rises by from 2 to 10 degC.

    15.
    发明专利
    未知

    公开(公告)号：ES2142527T3

    公开(公告)日：2000-04-16

    申请号：ES96112063

    申请日：1996-07-26

    Applicant: BASF AG

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

    IPC: B01J23/88 ,  B01J23/00 ,  B01J23/887 ,  B01J23/888 ,  B01J35/00 ,  C01G31/00 ,  C01G39/00 ,  C07B61/00 ,  C07C51/235 ,  C07C51/25 ,  C07C57/05 ,  C07C57/055

    Abstract: Multi-metal oxide compsn. of general formula ÄAÜpÄBÜq (I) is new (where, A = Mo12Va(X b)(X c)(X d)X e)(X f )(X g)Ox, B = X 12CuhHiOy (promoter phase); X = W, Nb, Ta, Cr and/or Ce; X = Cu, Ni, Co, Fe, M n and/or Zn; X = Sb and/or Bi; X = Li, Na, K, Rb, Cs and/or H; X = Mg, Ca, Sr and/or Br; 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 = 0-50; e = 0-2; f = 0-5; g = 0-50; h = 4-30; i = 0-20; x, y = values determining the valency and frequency of elements different from oxygen in the compsn.; and p, q = values other than zero, whose ratio p/q = 160-1:1. The proportions of (A)p and (B)q are in the form of chemical compsns. differing from their local environment. A and B are distributed relative to each other such as a mixt. of finely divided A and finely divided B, with the proviso that B contains crystals B* of oxometallates of formula CuMoaWbVcNbdTeOy (II) (where, a/(A+B+C+D+E)=0.7-1.3; (B+C+D+E)/A = 0.01-1; and Y = a value determined by the valency and frequency of elements in (II) different from oxygen) of a new structure type (HT-Cu molybdate) defined by the X-ray diffraction pattern: d(A)=6.79+/-0.3; 3.56+/-0.3; 3.54+/-0.3, 3.40+/-0.3; 3.04+/-0.3, 2.96+/-0.3; 2.67+/-0.2; 2.66+/-0.2; 2.56+/-0.2, 2.36+/-0.2; 2.35+/-0.2; 2.27+/-0.2; 2.00+/-0.2;1.87+/-0.3; 1.70+/-0.2; 1.64+/-0.2; 1.59+/-0.2; 1.57+/-0.2; 1.57+/-0.2; 1.55+/-0.2; 1.51+/-0.2; 1.44+/-0.2. Also claimed are: (i) the oxometallates of formula (II); (ii) mixt. of oxometallates (II); (iii) prodn. of the multi-metal oxide compsn..

    17.
    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.

    19.
    发明专利
    未知

    公开(公告)号：DE19542755A1

    公开(公告)日：1997-05-22

    申请号：DE19542755

    申请日：1995-11-16

    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 ,  C07B33/00 ,  C07B35/04 ,  B01J23/24 ,  B01J23/85

    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.

    20.
    发明专利
    未知

    公开(公告)号：DE19528646A1

    公开(公告)日：1997-02-06

    申请号：DE19528646

    申请日：1995-08-04

    Applicant: BASF AG

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

    IPC: B01J23/88 ,  B01J23/00 ,  B01J23/887 ,  B01J23/888 ,  B01J35/00 ,  C01G31/00 ,  C01G39/00 ,  C07B61/00 ,  C07C51/235 ,  C07C51/25 ,  C07C57/05 ,  C07C57/055 ,  C01G1/02 ,  C01G53/00 ,  C01G41/00

    Abstract: Multi-metal oxide compsn. of general formula ÄAÜpÄBÜq (I) is new (where, A = Mo12Va(X b)(X c)(X d)X e)(X f )(X g)Ox, B = X 12CuhHiOy (promoter phase); X = W, Nb, Ta, Cr and/or Ce; X = Cu, Ni, Co, Fe, M n and/or Zn; X = Sb and/or Bi; X = Li, Na, K, Rb, Cs and/or H; X = Mg, Ca, Sr and/or Br; 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 = 0-50; e = 0-2; f = 0-5; g = 0-50; h = 4-30; i = 0-20; x, y = values determining the valency and frequency of elements different from oxygen in the compsn.; and p, q = values other than zero, whose ratio p/q = 160-1:1. The proportions of (A)p and (B)q are in the form of chemical compsns. differing from their local environment. A and B are distributed relative to each other such as a mixt. of finely divided A and finely divided B, with the proviso that B contains crystals B* of oxometallates of formula CuMoaWbVcNbdTeOy (II) (where, a/(A+B+C+D+E)=0.7-1.3; (B+C+D+E)/A = 0.01-1; and Y = a value determined by the valency and frequency of elements in (II) different from oxygen) of a new structure type (HT-Cu molybdate) defined by the X-ray diffraction pattern: d(A)=6.79+/-0.3; 3.56+/-0.3; 3.54+/-0.3, 3.40+/-0.3; 3.04+/-0.3, 2.96+/-0.3; 2.67+/-0.2; 2.66+/-0.2; 2.56+/-0.2, 2.36+/-0.2; 2.35+/-0.2; 2.27+/-0.2; 2.00+/-0.2;1.87+/-0.3; 1.70+/-0.2; 1.64+/-0.2; 1.59+/-0.2; 1.57+/-0.2; 1.57+/-0.2; 1.55+/-0.2; 1.51+/-0.2; 1.44+/-0.2. Also claimed are: (i) the oxometallates of formula (II); (ii) mixt. of oxometallates (II); (iii) prodn. of the multi-metal oxide compsn..

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