salen催化氧化环己烷制备环己酮

制药工程论文编号:ZY057    论文字数:8843,页数:23

 目  录
中文摘要 I
英文摘要 .......II
目录................................................................. ..III
1. 绪论 1
 1.1 前言 1
 1.2 研究现状 1
 1.3 本文研究的内容...................................................4
2. 实验部分 ............................................................5
 2.1 实验仪器与试剂   .................................................5
 2.2 实验操作步骤   ...................................................6
3. 结果与讨论.......................................................... 12
 3.1 不同催化剂的催化效果............................................ 12
 3.2 [Co(Ⅱ)（salen）]和 [Fe(Ⅲ)（salen）Cl]在不同溶剂中的催化效果.....12
 3.3 反应温度对催化效果的影响........................................ 13
 3.4 不同氧化剂对催化效果的影响...................................... 13
 3.5不同反应时间对催化效果的影响.....................................14
 3.6催化机理........................................................ 14
 3.7小结............................................................ 15
4. 总结和展望.......................................................... 16
 4.1 总结............................................................ 16
 4.2 展望............................................................ 16
致谢................................................................... 17
参考文献............................................................... 18

摘要：本文制备了[Fe(Ⅲ)（salen）Cl]、[Mn(Ⅲ)（salen）Cl]和[Co(Ⅱ)（salen）]三种催化剂，并将其应用于环己烷催化氧化的工艺中。催化剂采用傅立叶红外光谱进行表征。实验以H2O2和过氧化氢叔丁基为氧化剂，乙腈或丙酮作为溶剂，在60℃的温度下反应。实验发现以丙酮为溶剂，[Co(Ⅱ)（salen）]为催化剂的过氧化氢体系中反应6小时，环己烷的转化率高达62.5%。探讨了环己烷催化氧化下的反应机理。
关键词： salen催化剂;环己烷;仿生催化；催化氧化；反应机理

Abstract: Salen complexes of iron(Ⅲ)、manganese(Ⅲ) and cobalt(Ⅱ) were synthesized and employed as catalysts in the oxidation of cyclohexane. The catalysts were characterized by Fourier Transform Infrared Spectrometer. The reactions were carried out in acetonitrile or acetone at 60℃，using hydrogen peroxide and tert-butylhydroperoxide as oxidation. Acetone as soluat，cyclohexane conversions up to 62.5% were obtained for the system [Co(Ⅱ)（salen）]/ H2O2 . A possible mechanism was proposed for the reaction by Oxidation of cyclohexane.
Keywords: salen catalyst；cyclohexane ；biomimetic catalyst；oxidation；kinetic resolution