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    CATALYST FOR PREPARATION OF MALEIC ANHYDRIDE FROM FOUR-CARBON HYDROCARBONS
    13.
    发明专利
    CATALYST FOR PREPARATION OF MALEIC ANHYDRIDE FROM FOUR-CARBON HYDROCARBONS 未知

    公开(公告)号：CA1122958A

    公开(公告)日：1982-05-04

    申请号：CA352925

    申请日：1980-05-28

    Applicant: STANDARD OIL CO OHIO

    Inventor： SURESH DEV D ,  BREMER NOEL J ,  GRASSELLI ROBERT K

    IPC: B01J21/00 ,  B01J23/00

    Abstract: (4856) PREPARATION OF MALEIC ANHYDRIDE FROM FOUR CARBON HYDROCARBONS Catalyst comprising the combined oxides of vanadium and at least one element selected from the group consisting of boron, niobium, tantalum, antimony, tungsten and chromium have been found to be especially effective in the oxidation of n-butane, n-butenes and butadiene, or a mixture thereof with molecular oxygen in the vapor phase to yield maleic anhydride. The catalysts of the present invention may be further promoted with additional elements to enhance activity, stability and selectivity. The reaction with n-butane gives an especially pure product in good yield and selectivity.

    19.
    发明专利
    未知

    公开(公告)号：DE69322383T2

    公开(公告)日：1999-04-29

    申请号：DE69322383

    申请日：1993-09-08

    Applicant: STANDARD OIL CO OHIO

    Inventor： FRIEDRICH MARIA S ,  SEELEY MICHAEL J ,  PAPARIZOS CHRISTOS ,  SURESH DEV D

    IPC: B01J23/18 ,  B01J23/22 ,  B01J23/26 ,  B01J23/847 ,  B01J23/889 ,  C01C3/02 ,  C07B61/00 ,  C07C253/26 ,  C07C255/08

    Abstract: Disclosed is a method for ammoxidizing C3 to C5 mono-olefins to a,b-mono-unsaturated acyclic nitriles having 3 to 5 carbon atoms and HCN by introducing such mono-olefins molecular oxygen and ammonia into a reaction zone into vapor phase contact with a solid ammoxidation catalyst, wherein the mol ratio of introduced molecular oxygen and ammonia to said introduced mono-olefin is at least 1.5 and 1.0, respectively, wherein said catalyst contains the elements and proportions indicated by the empirical formula: V1SbaMmNnOx where a = 0.5 to 2 M = one or more of: Sn, Ti, Fe, and Ga m = 0.05 to 3, usually at least 0.1 and at most 1 N = one or more of: W, Bi, Mo, Li, Mg, P, Zn, Mn, Te, Ge, Nb, Zr, Cr, Al, Cu, Ce, B n = 0.0 to 0.5, and wherein the preparation of the catalyst includes contacting in an aqueous dispersion a vanadium compound and an antimony compound while said vanadium is in solution.

    20.
    发明专利
    未知

    公开(公告)号：DE69017996D1

    公开(公告)日：1995-04-27

    申请号：DE69017996

    申请日：1990-09-13

    Applicant: STANDARD OIL CO OHIO

    Inventor： FRIEDRICH MARIA S ,  SURESH DEV D ,  SEELY MICHAEL J

    IPC: C07B61/00 ,  C07C253/24 ,  B01J23/88 ,  C07C255/07 ,  C07C255/08

    Abstract: Disclosed is a process for making an alpha , beta -unsaturated mononitrile by the catalytic reaction of a paraffin containing 3-5 carbon atoms with molecular oxygen and ammonia by catalytic contact of the foregoing reactants in a reaction zone with a metal oxide catalyst composition that has 10-90 weight percent of a diluent/support and 90-10 weight percent of a catalyst containing the elements indicated by the empirical formula. AaDdBicFefMo12Ox in the proportions indicated by the said formula. said diluent/support containing 10 to 100 weight percent Al2O3 and zero to 90 weight percent SiO2 wherein A is one or more of Li, Na, K, Rb, Cs, Tl B, W , Sn and La: D is one or more of Cr, Sb, Pb, P, Cu, Ni, Co, Mn and Mg; a is zero to 10; c is 0.1 to 10; d is zero to 10; and f is 0.2 to 10; and wherein the reactants fed to the reaction zone contain a mole ratio of said paraffin:NH3 in the range from 2 to 16 and a mole ratio of said paraffin to O2 in the range from 1 to 10.

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