甲苯氨氧化反应制备苯腈及苯代三聚氰胺的合成  

Preparation of benzonitrile by ammoxidation of toluene and synthesis of benzoguanamine

作　　者：欧阳立鹏[1] 游向前[1] 黄业迎 张爱清[1] 谢光勇[1] 

机构地区：[1]中南民族大学化学与材料科学学院催化材料科学国家民委-教育部重点实验室,湖北武汉430074

出　　处：《应用化工》2017年第9期1692-1694,共3页Applied Chemical Industry

基　　金：国家自然科学基金项目(21172269)

摘　　要：利用连续流动式固定床反应器和气相色谱仪研究甲苯氨氧化制备苯腈,苯腈和双氰胺反应得到苯代三聚氰胺。讨论了反应温度、原料配比对苯腈收率和质量的影响。结果表明,最佳反应条件为:反应温度633 K,空比30,氨比6,空速540 h^(-1),此时苯腈的收率94%。在反应时间2 h,苯腈与双氰胺摩尔比0.8,洗涤5次时,苯代三聚氰胺收率93%以上,m.p.226℃。The ammoxidation of toluene was researched in detail through continuous flow fixed bed reactor and GC,to prepare benzonitrile which was then reacted with dicyandiamide to obtain benzoguanamine. The effects of reaction temperature, ratio of raw materials upon the yield and quality were discussed. The result showed that the optimum reaction condition were temperature 633 K , toluene＊ N H 3 ： Air = 1： 6： 30 and space velocity 540 h 1, under optimum reaction condition, the yield of benzonitrile 9 4 % . The benzoguanamine was obtained in over 93 % yield by benzonitrile reacted with dicyandiamide under the re-action time was 2 h,the molar ratio of benzene nitrile with dicyandiamide was 0. 8 ,washing times was 5, m . p. 226 °C .

关 键 词：甲苯 氨氧化 苯腈 苯代三聚氰胺 

分 类 号：TQ032.41[化学工程] TQ051.14