11.
    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

    13.
    发明专利
    未知

    公开(公告)号:BR9602629A

    公开(公告)日:1998-04-22

    申请号:BR9602629

    申请日:1996-06-04

    Abstract: The process for the ammoxidation of a C3 to C5 paraffinic hydrocarbon to its corresponding alpha , beta -unsaturated hydrocarbon comprising reacting the C3 to C5 paraffinic hydrocarbon with ammonia and oxygen in a fluid bed reactor at a temperature of between 250 DEG C to 600 DEG C in the presence of a catalyst having the empirical formula as follows: VvSbmAaDdOx wherein A when present is Sn and/or Ti D when present is one or more of Li, Mg, Na, Ca, Sr, Ba, Co, Fe, Cr, Ga, Ni, Zn, Ge, Nb, Zr, Mo, W, Cu, Te, Ta, Se, Bi, Ce, In, As, B, Al, P and Mn; and wherein v is 1, m is 0.5-75, a is 0 to 25, d is 0 to 25, and x is determined by the oxidation state of the cations present, and a minor quantity of an halogen-containing component, preferably characterized by the following formula: R-X or X2 where R=Hydrogen, C1-C20 alkyl and X=F, Cl, Br, I or mixtures thereof.arbo

    14.
    发明专利
    未知

    公开(公告)号:MX165294B

    公开(公告)日:1992-11-04

    申请号:MX1402988

    申请日:1988-12-02

    Abstract: Disclosed is a method of making a catalyst precursor by reacting the ion VO(O2) in aqueous solution with an antimony compound that contains Sb having a valence of 3. In one embodiment, the VO(O2) ion is made by reacting H2O2 with a vanadium compound. Also disclosed is making a catalyst by drying and calcining such precursor. When the drying is effected by spray drying a new microspheroidal catalyst is produced. The catalysts useful for ammoxidation of propane are more attrition resistant than catalysts of the same empirical formula made by prior art methods.

    20.
    发明专利
    未知

    公开(公告)号:BR8806416A

    公开(公告)日:1989-08-22

    申请号:BR8806416

    申请日:1988-12-06

    Abstract: Disclosed is a method of making a catalyst precursor by reacting the ion VO(O2) in aqueous solution with an antimony compound that contains Sb having a valence of 3. In one embodiment, the VO(O2) ion is made by reacting H2O2 with a vanadium compound. Also disclosed is making a catalyst by drying and calcining such precursor. When the drying is effected by spray drying a new microspheroidal catalyst is produced. The catalysts useful for ammoxidation of propane are more attrition resistant than catalysts of the same empirical formula made by prior art methods.

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