| 摘要 |
A catalyst comprising an oxide complex of the general formula Fe1-50Bi0.1-20Sb1-100AaBbCcOx in which A represents Cu, Ce, U, V, Cr, Mn and/or Te; B represents an alkali metal, alkaline earth metal, Co, Ni, Zn, Cd, rare earth, Ga, Tl and/or Th; C represents Mo, W, Nb, Ta, Sn, Ge, Ti, Zr, P, B, and/or As; a is 0 - 20; b is 0 - 20; c is 0 - 20; a+b+c is greater than 0 and x is a number determined by the oxygen requirements of the other elements present. The catalysts are useful in the production of nitriles by the vapour phase ammoxidation of olefins, aldehydes and alcohols; the vapour phase oxidation of olefins containing not more than three contiguous carbon atoms and the vapour phase oxydehydrogenation of olefins containing four or more contiguous carbon atoms. A particularly preferred catalyst according to the invention has the formula W0.2Mo1Bi2Cu3Fe12Ox. |
