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    52.
    发明专利
    未知

    公开(公告)号：BR9006650A

    公开(公告)日：1991-10-01

    申请号：BR9006650

    申请日：1990-12-28

    Applicant: STANDARD OIL CO OHIO

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

    IPC: B01J23/88 ,  B01J23/887 ,  B01J27/186 ,  B01J27/19 ,  B01J27/192 ,  C07B61/00 ,  C07C253/24 ,  C07C253/26 ,  C07C255/08

    Abstract: Olefins such as propylene and isobutylene are converted to the corresponding unsaturated nitriles, acrylonitrile, and methacrylonitrile, respectively, by reacting a mixture of the olefin, ammonia, and molecular oxygen-containing gas in the presence of a catalyst containing the oxides of bismuth, molybdenum, iron, nickel and magnesium, at least one element selected from the group comprising potassium and cesium, and optionally one element selected from the group comprising cobalt, phosphorus, manganese, tellurium, sodium, cerium, chromium, antimony and tungsten wherein the sum of cesium and potassium is at least 0.1 to 0.4.

    PREPARATION OF MALEIC ANHYDRIDE FROM FOUR-CARBON HYDROCARBONS
    56.
    发明专利
    PREPARATION OF MALEIC ANHYDRIDE FROM FOUR-CARBON HYDROCARBONS 未知

    公开(公告)号：CA1086325A

    公开(公告)日：1980-09-23

    申请号：CA258387

    申请日：1976-08-04

    Applicant: STANDARD OIL CO OHIO

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

    IPC: C07D307/60 ,  B01J23/00 ,  C07B61/00 ,  C07C51/215 ,  C07C51/25

    Abstract: Catalysts 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.

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