| 摘要 |
PROBLEM TO BE SOLVED: To obtain a catalyst compsn. for ammoxidation giving a high yield of acrylonitrile or methacrylonitrile by using an oxide represented by a specified formula. SOLUTION: This catalyst compsn. for ammoxidation is represented by the formula, wherein X is Mg, Ca, Sr, Ba, Zn or Mn, Y is Na, K, Rb or Cs, Z is W, V, Nb, Ta, Sb, Re or Te, each of (b), (c), (d), (e), (f) and (g) shows atomic ratio to 12 Mo atoms, 0.5<=b<=2, 0.1<=c<=3, 4<=d<=10, 0<=e<=3, 0.01<=f<=2, 0<g<=3, (h) is the atomic number of oxygen required to satisfy the valence requirements of other existing elements, (a) shows the relative atomic ratio of Ce to (Bi+Ce) and 0.6<=a<=0.8. |
