21.
    发明专利
    未知

    公开(公告)号:DE69011495T2

    公开(公告)日:1994-12-08

    申请号:DE69011495

    申请日:1990-12-13

    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.

    28.
    发明专利
    未知

    公开(公告)号:DD138280A5

    公开(公告)日:1979-10-24

    申请号:DD20715878

    申请日:1978-08-07

    Abstract: Process for forming multi-component oxide catalysts. According to the invention the key catalytic phase of the catalyst is preformed and the elements of the host-catalyst phase are added together or separately. The key catalytic phase contains a molybdate or a tungstate of Bi, Te, Sb, Sn Cu or mixtures thereof. A representative catalyst is 50% [Bi2Mo3O12] 1/2 [K0.1Ni2.5Co4.5Fe3P0.5Mo10.5 Ox] + 50% SiO2 In the production of this catalyst a preformed bismuth molybdate slurry is added to a host-catalyst slurry. The mixture was then dried, calcined, ground and calcined once again.

    PROCESS FOR THE PREPARATION OF DIOLEFINS FROM OLEFINS

    公开(公告)号:CA1037500A

    公开(公告)日:1978-08-29

    申请号:CA210722

    申请日:1974-10-03

    Abstract: PROCESS FOR THE PREPARATION OF DIOLEFINS FROM OLEFINS A catalyst is disclosed wherein the atomic ratios are disclosed by the empirical formula: Aa Cc Dd Fee Bif Mog Ox wherein A is chromium, tellurium, germanium, tungsten, manganese, thorium, niobium, praseodymium, cerium, lanthanum, zinc or mixture thereof; C is an alkali metal, alkaline earth metal, Tl, In, Ag, Cu, Sn, Sb, rare earth metal or mixture thereof; D is nickel, cobalt, magnesium, zinc, cadmium, manganese, calcium or mixture thereof; A is not the same as D; and wherein a is greater than zero to about 4; c is 0 to about 4; d is 0.1 to about 20; e and f are 0.01 to 12; g is 10 to 15; and x is the number of oxygens required by the valence states of the other elements present. This catalyst may be employed for the oxidative dehydrogenation of olefins of 1 to about 10 carbon atoms.

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