Selective Allylic Oxidation of Cyclohexene Catalyzed by Nitrogen-Doped Carbon Nanotubes
(0) Carbon nanotubes (CNTs) and nitrogen-doped CNTs (NCNTs) were systematically investigated as metal-free catalysts in the selective allylic oxidation of cyclohexene using molecular oxygen as oxidant in the liquid-phase.High up to 59.0%cyclohexene conversion and 620.1 mmol g-1 h-1 mass-normalized activity were obtained over NCNTs, competing with the state-of-the-art metal catalysts.The positive effect of nitrogen dopant on the performance of CNTs was demonstrated, on the aspects of enhancing activity and increasing selectivity of 2-cyclohexen-1-one, allowing for a ketone/alcohol ratio of 3.7 at 59% conversion.The unique catalytic role of NCNTs was attributed to their capability to promote the radical chain propagation via stabilizing peroxyl and cycloxyl radicals, which boosted the further conversion of2-cyclohexen-1-ol toward 2-cyclohexen-1-one as well.
Cyclohexene Carbon Nanotubes Nitrogen Allylic Oxidation Aerobic oxidation
Yonghai Cao Hao Yu Feng Peng Hongjuan Wang
School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou,Guangdong, 510640 China
国内会议
宁波
英文
930-953
2014-11-11（万方平台首次上网日期，不代表论文的发表时间）