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    Heterogeneous catalyzed gas phase oxidation of propane to acrolein and acrylic acid
    5.
    发明专利
    Heterogeneous catalyzed gas phase oxidation of propane to acrolein and acrylic acid 未知

    公开(公告)号：DE19746667A1

    公开(公告)日：1999-04-29

    申请号：DE19746667

    申请日：1997-10-23

    Applicant: BASF AG

    Inventor： JACHOW HARALD DR ,  TENTEN ANDREAS DR ,  UNVERRICHT SIGNE DR ,  ARNOLD HEIKO DR

    IPC: B01J23/00 ,  C07C45/33 ,  C07C51/215 ,  C07C57/05 ,  C07C57/055 ,  C07C59/66 ,  C07C69/716 ,  C07C69/734 ,  B01J23/882 ,  B01J23/887 ,  C07C45/32 ,  C07C47/22

    Abstract: Heterogeneous catalyzed gas phase oxidation of propane to acrolein and/or acrylic acid uses 2 consecutive, stationary beds of catalysts based on different multimetal oxides and a starting gas mixture containing \- 50 vol.% propane, \- 15 vol.% oxygen and 0-35 vol.% inert gas. Heterogeneous catalyzed gas phase oxidation of propane to acrolein and/or acrylic acid involves passing a mixture of propane, oxygen and optionally inert gas over a stationary catalyst bed at 300-500 deg C. Two consecutive, stationary beds of catalysts based on different multimetal oxides (A and B) are used and a starting gas mixture containing \- 50 vol.% propane, \- 15 vol.% oxygen and 0-35 vol.% inert gas is passed through the catalyst bed A and then B. The active materials of the catalyst beds are multimetal oxides of formula M aMo1-bM bOx (I) in bed A and multimetal oxides of formula Bia'Mob'X c'X d'X e'X f'X g'X h'Ox'(II) in bed B: M = Co, Ni, Mg, Zn, Mn, Cu and/or Sn; M = W, V, Te, Nb, P, Cr, Fe, Sb, Ce and/or La; X = W, V and/or Te; X = alkaline earth metal, Co, Ni, Zn, Mn, Cu, Cd, Sn and/or Hg; X = Fe, Cr and/or Ce; X = P, As, Sb and/or B; X = alkali metal, Tl and/or Sn; X = a rare earth metal, Ti, Zr, Nb, Ta, Re, Ru, Rh, Ag, Au, Al, Ga, In, Si, Ge, Th and/or U; a = 0.5-1.5; b = 0-0.5; a' = 0.01-8; b' = 0.1-30; c' = 0.1-20; d', e' = 0-20; f' = 0-6; g' = 0-4; h' = 0-15; x, x' = a number depending on the valency and content of elements other than oxygen.

    6.
    发明专利
    未知

    公开(公告)号：DE59405671D1

    公开(公告)日：1998-05-20

    申请号：DE59405671

    申请日：1994-01-25

    Applicant: BASF AG

    Inventor： TENTEN ANDREAS DR ,  HAMMON ULRICH DR ,  WEIDLICH PETER DR ,  DOERFLINGER WALTER

    IPC: B01J23/85 ,  B01J23/88 ,  B01J23/92 ,  B01J23/94 ,  B01J38/48 ,  B01J38/52 ,  B01J38/62 ,  B01J38/68 ,  C07C57/055

    Abstract: Process for regenerating spent multimetal oxide oxidation catalysts from catalytic gas-phase oxidations of lower organic compounds, which catalysts, unspent, contain as base constituents the elements Mo, W, V and Cu in oxide form, by the action of oxidising agents and of solubilising aqueous ammonia containing added acetic acid and/or the ammonium salt thereof and subsequent drying and calcination in which, within the process, the content of the metallic constituents is quantitatively determined and supplemented to the respective original value.

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