| abstract |
The following: a) a support material selected from aluminum oxide, silicon dioxide, aluminum silicate, magnesium silicate, titanium dioxide, zirconium dioxide, thorium dioxide, silicon carbide or mixtures thereof and b) vanadium (V) and antimony (Sb) And a shell-type catalyst comprising an active material in a shell each containing at least one element selected from molybdenum (Mo) and / or tungsten (W) in the form of an oxide, wherein the support material is Use of the shell-type catalyst in a method for producing the shell-type catalyst and an ammoxidation method, which is spherical, nearly spherical or tubular with a diameter in the range of 2 to 10 mm. |