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Development and application of catalysts for catalytic ozonation of Cl-VOCs at low temperature: A comprehensive review
Separation and Purification Technology ( IF 8.1 ) Pub Date : 2023-11-28 , DOI: 10.1016/j.seppur.2023.125882
Qi Jiang , Shaobo Chen , Zhongjun Xu

Chlorinated volatile organic compounds (Cl-VOCs) are highly toxic and difficult to degrade. Unregulated release of pollutants presents a grave danger to both the health of humans and the natural environment. Catalytic ozonation is a low-cost and energy-efficient method to degrade Cl-VOCs. Treating readily volatile, highly toxic, and hardly degradable Cl-VOCs required a catalyst with high activity and resistance to chlorine. In this paper, recent advances in the catalytic ozonation of Cl-VOCs at low temperatures are systematically reviewed, including single Cl-VOCs and gas mixtures with Cl-VOCs. The microstructure, morphology, active components, support materials, surface acidity, oxygen vacancy, water and chlorine resistance of various catalysts for catalytic ozonation of Cl-VOCs are thoroughly discussed. It is possible to regulate surface acidity and oxygen vacancy density by Cu and Ce doping and vacuum drying treatment. The hollow structure, nanorod structure, and strong electronic metal–metal interaction (EMMI) coordination structures enhance catalyst chlorine resistance. It is emphasized that the doping of Ce on Mn-based catalysts can simultaneously modulate the catalyst surface acidity and oxygen vacancy, and enhance the chlorine resistance. Finally, the challenges of catalytic ozonation of Cl-VOCs are presented, and suggestions are provided for the future design of catalysts for catalytic ozonation by Cl-VOCs.



中文翻译:

Cl-VOCs低温催化臭氧化催化剂的开发与应用:综述

氯化挥发性有机化合物(Cl-VOCs)具有剧毒且难以降解。污染物的无管制排放对人类健康和自然环境构成严重威胁。催化臭氧化是一种低成本、节能的降解 Cl-VOCs 的方法。处理易挥发、高毒性、难降解的 Cl-VOCs 需要具有高活性和耐氯性的催化剂。本文系统综述了Cl-VOCs低温催化臭氧化的最新进展,包括单一Cl-VOCs和Cl-VOCs气体混合物。对用于Cl-VOCs催化臭氧化的各种催化剂的微观结构、形貌、活性组分、载体材料、表面酸性、氧空位、耐水性和耐氯性进行了深入讨论。通过Cu、Ce掺杂和真空干燥处理可以调节表面酸度和氧空位密度。中空结构、纳米棒结构和强电子金属-金属相互作用(EMMI)配位结构增强了催化剂的耐氯性。强调了锰基催化剂上Ce的掺杂可以同时调节催化剂表面酸性和氧空位,增强耐氯性。最后,提出了Cl-VOCs催化臭氧化面临的挑战,并为未来Cl-VOCs催化臭氧化催化剂的设计提供了建议。

更新日期:2023-12-01
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