非均相催化剂催化臭氧氧化含酚废水的研究进展

Research progress on the treatment of phenol containing wastewater by heterogeneous catalyst ozonation

催化臭氧氧化技术在深度处理含酚有机废水方面具有操作简单、氧化效率高、二次污染小等优点。然而,其规模化应用依赖于开发高活性和高稳定性的非均相催化剂。介绍了催化臭氧氧化技术中非均相催化臭氧氧化反应机理。从非负载型和负载型催化剂两方面综述了催化臭氧氧化酚类化合物非均相催化剂的研究现状,重点分析了非负载型催化剂、单活性组分负载型催化剂及多组分负载型催化剂的特点及局限性,指出多组分负载型催化剂由于具有显著提升臭氧利用率、降低臭氧投放量,以及性能可优化潜力大等优势,是当前主要研究对象。针对高效催化剂开发,提出了从几何结构和电子结构角度入手,实现催化剂组分、尺寸和缺陷位调控等性能优化策略。最后对用于酚类化合物去除的非均相催化剂的研究进展进行了总结和展望,以期对催化臭氧氧化技术中高效催化剂的开发提供参考。

Catalytic ozonation process has the advantages of simple operation,high oxidation efficiency and low secondary pollution in the advanced treatment of phenol containing organic wastewater.However,its large-scale application depends on the development of heterogeneous catalysts with high activity and stability.Herein,the mechanism of hetergeneous catalytic ozone oxidation reaction in catalytic ozonation technology was introduced.The research status of heterogeneous catalysts for catalytic ozonation of phenolic compounds was reviewed from two aspects of non-supported and supported catalysts,and the characteristics and limitations of non-supported catalysts,single active component supported catalysts and multi-component supported catalysts were mainly analyzed.Multicomponent supported catalyst is the main research object since its advantages on improving ozone utilization rate,reducing ozone emission and great potential of performance optimization.To develop highly efficient catalysts,the optimization strategy on composition,size and defect site of catalyst was proposed from the perspective of geometric structure and electronic structure.Finally,the research progress of heterogeneous catalytic ozonation catalysts for removal of phenolic compounds was summarized and prospected in order to provide reference for the development of efficient catalysts for catalytic ozonation technology.