Production of multimetal oxide material, useful as an oxidation or ammoxidation catalyst comprises subjecting a mixture of metal oxide sources to hydrothermal treatment

摘要

Production of a multimetal oxide material (I) comprises subjecting a mixture of metal oxide sources to hydrothermal treatment. The sources are metal (hydr)oxides, metals and ammonium salts, at least partly with a submaximal oxidation number, provided that the ammonium/molybdenum molar ratio is no more than 0.5. Production of a multimetal oxide material of formula (I) comprises subjecting a mixture of metal oxide sources to hydrothermal treatment. The sources are metal (hydr)oxides, metals and ammonium salts, at least partly with a submaximal oxidation number, provided that the ammonium/molybdenum molar ratio is no more than 0.5. Mo 1V aM 1 bM 2 cM 3 dM 4 eO n (I) M 1Al, Ga, In, Ge, Sn, Pb, As, Bi, Se, Te and/or Sb; M 2Sc, Y, La, Ti, Zr, Hf, Nb, Ta, Cr, W, Mn, Fe, Co, Ni, Zn, Cd and/or lanthanide; M 3Re, Ru, Rh, Pd, Os, Ir, Pt, Cu, Ag and/or Au; M 4Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba, NH 4 and/or Ti; a : 0.01-1; b, c : 0-1; d, e : 0-0.5; and n : a number depending on the valence and abundance of M 1-M 4.