甲醇氨氧化催化剂的制备及催化性能

Preparation and catalytic properties of methanol ammoxidation catalyst

铁钼催化剂用于甲醇氨氧化制氰化氢具有能耗低、活性高、工艺简单及副产物少等特点。研究催化剂制备工艺,并对甲醇氨氧化制氰化氢用铁钼催化剂进行活性评价。结果表明,甲醇氨氧化制氰化氢用铁钼催化剂的制备条件为:铁钼原子比为1.5,p H=2,750℃焙烧5 h,在此最佳条件下制备的催化剂上氰化氢收率最高。采用合适的催化剂成型方法可以有效提高甲醇氨氧化制氰化氢用铁钼催化剂利用率和催化剂活性。

Fe-Mo catalyst for methanol ammoxidation to hydrogen cyanide has the characteristics of low energy consumption, high activity, simple process and less by-products. The preparation process of Fe-Mo catalyst was studied, and its activity for methanol ammoxidation to hydrogen cyanide was evaluated. The results showed that the maximum yield of hydrogen cyanide was attained over Fe-Mo catalyst prepared un- der the preparation condition as follows ： Fe/Mo atomic ratio 1.5, pH = 2, calcination temperature 750 ℃ and calcination time 5 h. The appropriate forming method of Fe-Mo catalyst could effectively improve the utilization rate and activity of the catalyst for ammoxidation of methanol to hydrogen cyanide.