水法热合成的K-OMS-2催化剂上甲苯气相氧化制苯甲醛反应研究  

Vapor-phase Oxidation of Toluene to Benzaldehyde over Hydrothermal-synthesized K-OMS-2Catalyst

作　　者：李安[1] 罗才武[1] 冯丹丹[1] 晁自胜[1] 

机构地区：[1]湖南大学化学化工学院,化学生物传感与计量学国家重点实验室,湖南长沙410082

出　　处：《湖南大学学报（自然科学版）》2013年第12期80-83,共4页Journal of Hunan University:Natural Sciences

基　　金：湖南省芙蓉学者特聘教授计划项目;教育部创新研究团队(湖南大学)资助计划项目(IRT1238)

摘　　要：采用水热法制备了氧化锰八面体分子筛(K-OMS-2),对其进行了XRD,FTIR,N2-低温物理吸附和SEM表征,并考察了其对甲苯气相氧化制苯甲醛反应的催化性能.研究结果表明,所制备的K-OMS-2具有纳米纤维状形貌(直径约为30nm、长度大于1μm).相对于固相法和热回流法,水热法制备的K-OMS-2催化剂上苯甲醛选择性和收率更高.Manganese oxide octahedral molecular sieve （K-OMS-2） was prepared in the hydrothermal method.The K-OMS-2 was characterized with XRD,FT-IR,N2-adsorption and SEM,and was also employed as the catalyst for the vapor phase oxidation of toluene to benzaldehyde.It was shown that the K-OMS-2 prepared in the hydrothermal method had a morphology of nano-fiber with an average diameter of ca.30 nm and length of above 1 μm.Compared with those prepared in the solid phase method and refluxing method,the K-OMS-2 prepared in the hydrothermal method exhibited a larger yield of benzaldehyde with obviously higher selectivity.

关 键 词：水热法 氧化锰八面体分子筛 氧化 苯甲醛 甲苯 

分 类 号：O643.322[理学—物理化学]