Co-Mo催化剂上甲苯气相选择氧化制苯甲醛的研究  

Co-Mo-O/Al_2O_3-USY catalysts for gas phase selective catalytic oxidation of toluene to benzaldehyde

作　　者：刘伟华[1] 张同来[1] 张建国[1] 

机构地区：[1]北京理工大学机电工程学院爆炸灾害预防与控制国家重点实验室,北京100081

出　　处：《现代化工》2004年第7期33-35,37,共4页Modern Chemical Industry

摘　　要：制备一系列的负载型Co-Mo-O/Al2O3-USY催化剂,并用于甲苯的气相选择氧化制苯甲醛。结果表明:在空速6000h-1,空气/甲苯摩尔比100,MoO3负载量为10.00%(质量分数),在480℃反应,得到甲苯转化率43.76%,苯甲醛选择性25.97%,苯甲醛收率为11.37%的结果。并用X射线衍射、X射线光电子能谱等测试手段,对催化剂进行结构表征。A series of Mo-Co catalysts supported by A12O3-USY with different Mo/(Mo + Co) atomic ratio were prepared and used for gas phase selective oxidation of toluene to benzaldehyde. The structure and surface properties of the catalysts were characterized by X-ray diffractometry (XRD) and X-ray photoelectron spectroscopy (XPS). The best catalytic activity result with a 11.37% benzaldehyde yield could be reached when the catalyst has a ratio of nMo : (nMo + nCo) = 0.34, and temperature at 480°C with 6000.0 h-1 of space velocity, and 100 of the air/toluene molar ratio.

关 键 词：Co—Mo—O/A12O3-USY催化剂 甲苯 选择氧化 苯甲醛 

分 类 号：TQ426[化学工程] O643.32[理学—物理化学]