【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。更多还原

【Abstract】 A series of Mo-Co catalysts supported by Al₂O₃-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 n_Mo∶(n_Mo+n_Co)=0.34,and reacted at 480℃ with 6 000.0 h-（-1） of space velocity,and 100 of the air/toluene molar ratio.更多还原