TS-1催化丙酮氨氧化合成丙酮肟工艺研究

以钛硅分子筛(Ts-1)为催化剂,过氧化氢和丙酮为原料,催化氨氧化合成丙酮肟.对影响合成反应的多个因素进行了考察,合成条件经正交实验优化后丙酮肟产率有了较为明显的提高.结果表明:在反应温度65℃,搅拌转速320 r/min,质量分数30%过氧化氢水溶液滴加3.5～4.5 h,催化剂用量为丙酮质量的40%,n(丙酮):n...

Study on Synthetic Process of Acetone Oxime Catalytic Ammoxidation by TS-1

Acetone oxime was synthesized by catalytic ammoxidation using Ti-Si molecular sieve（TS-1） as catalyst,hydrogen peroxide and acetone as raw materials.Many factors affecting the synthesis reaction are studied.The yield of acetone oxime obviously increased through optimizing synthesis conditions by orthogonal experiments.The results show that the yield of acetone oxime can reach over 80% when reaction temperature is 65℃,stirring speed is 320r/min,dropping time of 30% hydrogen peroxide aqueous solution is 3.5~4.5h,catalyst mass fraction based on acetone is 40%,n（acetone）：n（H2O2）：n（NH3）=1：1.1： 3.5,V（water）：V（isopropanol）=1：1 mixture is used as solvent.Feeding inert gas to system can decrease the side reactions,and increase the yield of acetone oxime.