类水滑石衍生物催化臭氧氧化甲苯综合实验设计

Comprehensive Experimental Design on Catalytic Ozonation of Toluene over the Hydrotalcite-derived Catalysts

为提升本科生实验教学水平,基于化学前沿成果服务于大气污染治理的理念,设计了类水滑石衍生物催化剂催化臭氧氧化VOCs中具有代表性的苯系污染物甲苯的综合实验。学生自主设计实验方案,采用不同制备方法结合高温煅烧技术制备类水滑石衍生物催化剂,并对其进行X射线衍射XRD、扫描电子显微镜SEM、比表面积检测方法BET、H2程序升温还原H2-TPR、NH3程序升温脱附NH3-TPD、电子顺磁共振EPR等结构和理化性质表征。实验帮助学生理解材料化学在环保领域的实际应用,教会学生使用仪器分析手段解密构效关系,培养学生“宏微结合”的创新思维,也为科研课堂的开展提供了新思路。

In order to improve the experimental teaching level,based on the concept of serving air pollution control with material chemistry,a comprehensive experiment of catalytic ozonation of toluene using hydrotalcite-derived catalysts was designed.The experimental plans were designed by students independently,and different preparation methods combined with the high-temperature calcination technology could be selected according to different plans.Modern instrumental analysis methods such as X-ray diffraction(XRD),scanning electron microscopy(SEM),BET,H2-temperature programmed reduction(H2-TPR),NH3-temperature programmed desorption(NH3-TPD),and electron paramagnetic resonance(EPR),were used to characterize physicochemical characterization from the microscopic point of view.This experiment helps students understand the application of materials chemistry in the field of environmental engineering,which is helpful to improve students’macro-micro combination ability to think innovatively and stimulating students’interest in scientific research.