| 摘要 |
Polymetal oxide materials of the general formula I[A]p [B]q (I),where A is MO12VaX1bX2cX3dX4eX5fX6gOx(Co phase), B is X712CuhHiOy(key phase), X1 is W, Nb, Ta, Cr and/or Ce, X2 is Cu, Ni, Co, Fe, Mn and/or Zn, X3 is Sb and/or Bi, X4 is Li, Na, K, Rb, Cs and/or H, X5 is Mg, Ca, Sr and/or Ba, X6 is Si, Al, Ti and/or Zr, X7 is Mo, W, V, Nb and/or Ta, a is from 1 to 8, b is from 0.2 to 5, c is from 0 to 23, d is from 0 to 50, e is from 0 to 2, f is from 0 to 5, g is from 0 to 50, h is from 4 to 30, i is from 0 to 20, x and y are each a number which is determined by the valency and frequency of the elements other than oxygen in I and p and q are non-zero numbers whose ratio p/q is from 160:1 to 1:1, and their use as catalysts.
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