环己烷液相催化硝化制备硝基环己烷  

Preparation of nitrocyclohexane by liquid-phase catalytic nitration of cyclohexane

作　　者：刘四化[1] 鄢艳华[1] 郝芳[1] 刘平乐[1] 游奎一[1] 罗和安[1] 

机构地区：[1]湘潭大学化工学院,湖南湘潭411105

出　　处：《中国科技论文》2013年第6期580-583,共4页China Sciencepaper

基　　金：高等学科博士学科点专项科研基金资助项目(20124301110007);国家自然科学基金资助项目(21276218);教育部新世纪优秀人才计划资助项目(NCET-10-0168)

摘　　要：研究了温和条件下N-羟基邻苯二甲酰亚胺(NHPI)催化环己烷液相硝化合成硝基环己烷的过程,考察了反应时间、反应温度、催化剂用量等因素的影响,确定了液相催化硝化合成硝基环己烷的较优反应条件。结果表明当反应温度为70℃,环己烷与硝酸的物质的量比为2∶1,催化剂用量为环己烷质量的3.75%时,硝基环己烷的单程收率可达13.7%。通过气-质联用对反应产物进行了定性分析,表明反应产物除硝基环己烷外,其他主要为环己酮、环己醇、硝基环己烯。Nitrocyclohexane has been prepared from liquid-phase nitration of cyclohexane catalyzed by N-hydroxyphthalimide un der mild conditions. Effects of reaction temperature, reaction time and amount of catalyst on liquid-phase cyclohexane nitration reaction were examined in order to obtain the optimal conditions. The results indicated that the single-process yield of nitrocyclo- hexane was up to 13. 7% under the following reaction conditions： reaction temperature 70℃, amount of substance ratio of cyclo- hexane to nitric acid 2：1, and mass fraction of catalyst to cyclohexane 3. 75%. Besides nitrocyclohexane, some other major prod- ucts including cvclohexanone, cvelohexanol and 1-nituocyclohexene,were also identified bu GC-MS

关 键 词：化学工程 环己烷 液相硝化 硝基环己烷 

分 类 号：O643.32[理学—物理化学]