| 摘要 |
PURPOSE:To prepare a catalyst imparting an ammoxidation product in good yield by adjusting the pH of a solution or slurry containing Fe, Bi or Te and an Mo compound to 7 or more before drying and baking said solution or slurry. CONSTITUTION:The pH of a solution or slurry containing at least one compound selected from Fe-, Bi- and Te-compounds and an Mo compound is adjusted to 7 or more and subsequently dried and baked to prepare a molybdenum- containing ammoxidation catalyst. The aforementioned solution or slurry containing catalytic components adjusted to pH7 or more is heat-treated at 50-120 deg.C and, thereafter, the pH thereof is pref. adjusted to 7 or less before drying and baking. The obtained catalyst reduces the combustibility of ammonia in supplied gas at the time of the ammoxidation of an org. compound and has capacity obtaining an ammoxidation product in good yield without adding water. |
