Nitrogen-containing metallophosphates, their preparation and their use as catalysts or as catalyst supports

摘要

The present invention relates to nitrogen-containing metallophosphates, to their preparation and to their use as catalysts or as catalyst supports. The nitrogen-containing metallophosphates according to the invention correspond to the general formula (I> MP(1-y)O[m+5(1-y)-3x]/2Nx (I> in which - M represents the cation of an element chosen from Al, B, Cr, Fe and Mn, - m represents the degree of oxidation of the cation M, - 0 /= 0. When the cation M represents Al, B or Cr, m = 3. When the cation M represents Fe or Mn, m = 2.