26.
    发明专利
    未知

    公开(公告)号:BR9901709A

    公开(公告)日:2000-01-11

    申请号:BR9901709

    申请日:1999-03-24

    Abstract: A process of manufacturing acrylonitrile or methacrylonitrile by the catalytic reaction in the vapor phase of a paraffin selected from propane and isobutane with molecular oxygen and ammonia by catalytic contact of the reactants in a reaction zone with a catalyst, the feed composition having a mole ratio of the paraffin to ammonia in the range of from about 2.5 to 16 and a mole ratio of paraffin to oxygen in the range of from about 1.0 to 10, wherein said catalyst has the elements in the proportions indicated by the empirical formula: VSbmAaMobDdOx where A is one or more of Ti, Sn, Fe, Cr and Ga; D is one or more of Li, Mg, Ca, Sr, Ba, Co, Ni, Zn, Ge, Nb, Zr, W, Cu, Te, Ta, Se, Bi, Ce, In, As, B and Mn; m equals 0.8 to 4; a equals 0.01 to 2; 0

    28.
    发明专利
    未知

    公开(公告)号:ES2178350T3

    公开(公告)日:2002-12-16

    申请号:ES99302315

    申请日:1999-03-25

    Abstract: A process of manufacturing acrylonitrile or methacrylonitrile by the catalytic reaction in the vapor phase of a paraffin selected from propane and isobutane with molecular oxygen and ammonia by catalytic contact of the reactants in a reaction zone with a catalyst, the feed composition having a mole ratio of the paraffin to ammonia in the range of from about 2.5 to 16 and a mole ratio of paraffin to oxygen in the range of from about 1.0 to 10, wherein said catalyst has the elements in the proportions indicated by the empirical formula: VSbmAaMobDdOx where A is one or more of Ti, Sn, Fe, Cr and Ga; D is one or more of Li, Mg, Ca, Sr, Ba, Co, Ni, Zn, Ge, Nb, Zr, W, Cu, Te, Ta, Se, Bi, Ce, In, As, B and Mn; m equals 0.8 to 4; a equals 0.01 to 2; 0

    PROCESS FOR PREPARING ACRYLONITRILE OR METHACRYLONITRILE

    公开(公告)号:RO116273B1

    公开(公告)日:2000-12-29

    申请号:RO9900313

    申请日:1999-03-23

    Abstract: The invention relates to a process for preparing acrylonitrile or methacrylonitrile by means of the catalytic reaction in a vapour phase of a paraffin hydrocarbon, chosen from propane and isobutane, with molecular oxygen and ammonia in a molar ratio paraffin hydrocarbon to ammonia of 2.5 to 16 and a molar ratio paraffin hydrocarbon to oxygen of 1.0 to 10, the catalyst composition corresponding to the following empirical formula : VSBmAaMobDdOx where A is an element selected from among Ti, Sn, Fe, Cr, or Ga; D represents one or more elements selected from among Li, Mg, Ca, Sr, Ba, Co, Ni, Zn, Ge, Nb, Zr, W, Cu, Te, Ta, Se, Bi, Ce, In, As, B and Mn ; m is equal to 0.8 up to 4.0 ; a is equal to 0.01 up to 2.0 ; b is greater than 0 and greater than 0.005 ; d is equal to 0 up to 2.0 ; x has a value determined by the oxidation condition of the present cations, the catalyst being thermally treated at a temperature of at least 780 C degrees .

    30.
    发明专利
    未知

    公开(公告)号:TR199900709A2

    公开(公告)日:1999-10-21

    申请号:TR9900709

    申请日:1999-03-26

    Abstract: A process of manufacturing acrylonitrile or methacrylonitrile by the catalytic reaction in the vapor phase of a paraffin selected from propane and isobutane with molecular oxygen and ammonia by catalytic contact of the reactants in a reaction zone with a catalyst, the feed composition having a mole ratio of the paraffin to ammonia in the range of from about 2.5 to 16 and a mole ratio of paraffin to oxygen in the range of from about 1.0 to 10, wherein said catalyst has the elements in the proportions indicated by the empirical formula: VSbmAaMobDdOx where A is one or more of Ti, Sn, Fe, Cr and Ga; D is one or more of Li, Mg, Ca, Sr, Ba, Co, Ni, Zn, Ge, Nb, Zr, W, Cu, Te, Ta, Se, Bi, Ce, In, As, B and Mn; m equals 0.8 to 4; a equals 0.01 to 2; 0

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