Catalytic Performance of MnOx Nanorods in Aerobic Oxidation of Benzyl Alcohol  

一维锰氧化物纳米棒在以O2为氧源的苯甲醇氧化反应中的催化性能

作　　者：杨晶[1] 华青[1,2,3] 常苏捷[1,2,3] 于先琴[1] 马运生[1] 黄伟新[1,2,3] 

机构地区：[1]中国科学技术大学化学物理系,合肥230026 [2]中国科学技术大学中国科学院能量转换材料重点实验室,合肥230026 [3]中国科学技术大学合肥微尺度物质科学国家实验室(筹),合肥230026

出　　处：《Chinese Journal of Chemical Physics》2013年第4期424-430,J0001,共8页化学物理学报（英文）

摘　　要：Various manganese oxide nanorods with similar one-dimensional morphology were prepared by calcination of MnOOH nanorods under different gas atmosphere and at different temper- atures, which were synthesized by a hydrothermal route. The morphology and structure of MnOx catalysts were characterized by a series of techniques including X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, and tempera- ture programmed reduction （TPR）. The catalytic activities of the prepared MnO~ nanorods were tested in the liquid phase aerobic oxidation of benzyl alcohol, which follow a sequence as MnO2〉Mn203~Mn304〉MnOOH with benzaldehyde being the main product. On the basis of H2-TPR results, the superior activity of MnO2 is ascribed to its lower reduction temperature and therefore high oxygen mobility and excellent redox ability. Moreover, a good recycling ability was observed over MnO2 catalysts by simply thermal treatment in air.

关 键 词：Manganese oxides Nanorod Oxidation of benzyl alcohol X-ray photoelectronspectroscopy Hz-TPR 

分 类 号：O[理学]