壳聚糖接枝四(4-羧基苯基)钴卟啉催化氧化环己烷  

Catalytic oxidation of cyclohexane over cobalt tetra (4-carboxylphenyl) porphyrin grafted on chitosan

作　　者：沈莉[1] 黄冠[1] 蔡景莉[1] 彭艳[1] 曾凯[1] 郭勇安[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2013年第3期591-597,共7页Journal of Guangxi University（Natural Science Edition）

基　　金：广西科技攻关项目(桂科攻12118008-12-3);广西自然科学基金面上项目(2012GXNSFAA053016);广西大学实验建设与实验教学改革项目基金资助项目(20120322)

摘　　要：为了探究壳聚糖接枝四(4-羧基苯基)钴卟啉[Co TCPP/CTS]的催化性能,将四(4-羧基苯基)钴卟啉接枝固载到壳聚糖,并用紫外光谱、傅立叶红外光谱、X射线衍射、热重分析和比表面等技术对其进行结构表征。在无外加溶剂条件下,探索了Co TCPP/CTS选择性催化空气氧化环己烷的性能。结果表明,在较佳催化条件下(160℃和0.8 MPa),固载催化剂(含1.13×10-6mol Co TCPP)可连续有效重复使用催化8次,其平均的环己烷转化率15.8%,产率11.7%,转化数2.4×106,比相应未接枝的催化剂有更好的催化性能。In order to explore a catalytic performance of tetra（4-carboxyl phenyl）porphyrin supported on chitosan [ Co TCPP/CTS] , the cobalt porphyrin was grafted on chitosan and the supported catalyst was characterized by UV-Visible and Fourier transform infrared spectroscopic techniques, Xray powder diffraction, thermal analysis and N2 BET analysis. The catalysis of Co TCPP/CTS for the aerobic oxidation of cyclohexane was studied in absence of any solvent. The supported catalyst with a quantity of catalyst containing only 1.13 ×10 -6 mol of Co TCPP could be efficiently reused 8 times for the oxidation of cyclohexane with an average of 15.8% cyclohexane conversion rate, 11.7% yield （ ketone and alcohol） and a catalyst turnover number of 2. 4×106 at reaction temperature 160℃ and under 0. 8 MPa air pressure.

关 键 词：壳聚糖 四(4-羧基苯基)钴卟啉 氧化 环己烷 

分 类 号：O643.3[理学—物理化学]