六齿配位的8-羟基喹啉铁催化过氧化氢氧化环己烷的研究  

Oxidation of cyclohexane with hydrogen peroxide catalyzed by 8-quinoliolato Fe^Ⅲ complexes with hexadentate mode

作　　者：兰婉[1] 衷晟[1] 伏再辉[1] 

机构地区：[1]湖南师范大学化学化工学院,湖南长沙410081

出　　处：《工业催化》2008年第7期52-56,共5页Industrial Catalysis

基　　金：国家自然科学基金(20573035);湖南省自然科学基金(05JJ40022)

摘　　要：合成了几种具六齿配位的8-羟基喹啉铁类配合物,考察了这些配合物在催化过氧化氢氧化环己烷的催化性能。结果表明,配体的卤素取代基对催化剂有稳定作用,能提高其催化活性。二卤代的催化剂具有稳定的六齿配位结构,其催化反应速率慢;采用混合配体配位的催化剂能够明显加快反应速率,提高催化活性。8-quinoliolato Fe^Ⅲ complexes （ Q3Fe^Ⅲ） with hexadentate mode were synthesized and their catalytic behaviors were investigated for oxidation of cyclohexane with hydrogen peroxides. The results indicated that 5-chlorinated Q3 Fe^Ⅲ catalyst was unstable and exhibited low catalytic activity; 5- and 7-dihalogenated Q3Fe^Ⅲ catalysts exhibited stable and significantly-enhanced cyclohexane conversion. 5-chlorinated and 5, 7-di-chlorinated ligands co-coordinated Fe^Ⅲ catalyst were superior to single ligand coordinated Fe^Ⅲ catalysts both in reaction rate and catalytic activity, which might be due to the distorted hexadentate structure.

关 键 词：有机合成化学 8-羟基喹啉铁 六齿配合物 环已烷氧化催化剂 环已醇 环已酮 

分 类 号：O643.36[理学—物理化学] TQ123.6[理学—化学]