| 摘要 |
PURPOSE:To enhance the yield of production of methacrylic acid by spraying a slurry contg. specified metal compds. on an inert carrier, supporting a layer of a catalytically active material having a specified compsn. on the carrier by calcining and using the resulting catalyst for production of methacrylic acid. CONSTITUTION:Compds. separately contg. the constituent elements of an oxide represented by formula I (where No is molybdenum, P is phosphorus, A is one or more kinds of elements selected among As, Sb, Ge, Bi, Zr and Ce, B is one or more kinds of elements selected among Cu, Fe, Cr, Ni, Mn, Co, Sn, Ag, Zn, Pd, Rh and Te, C is one or more kinds of elements selected among V, W and Nb, D is one or more kinds of elements selected among alkali metals, alkaline earth metals and Tl and O is oxygen) are mixed. A slurry or soln. contg. the mixture is prepd. and sprayed on an inert carrier and then this carrier is calcined to obtain a catalyst for production of methacrylic acid. |
