Bai Yang, Yang Xu, Chen Jiateng, Shen Boxiong
School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300401, China.
School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China.
Chemosphere. 2024 Mar;351:141253. doi: 10.1016/j.chemosphere.2024.141253. Epub 2024 Jan 17.
Volatile organic compounds (VOCs) pose a serious threat to human health and the ecological environment. Thermal catalytic oxidation based on cerium dioxide based (CeO-based) catalysts is widely used in the degradation of toluene. However, new problems and challenges such as how to reduce the energy consumption during catalytic oxidation, improve the anti-poisoning performance of catalysts, and enhance the multi-species synergistic catalytic ability of catalysts continue to emerge. On this basis, we systematically summarize the current status of research progress on the thermocatalytic oxidation of toluene based on CeO-based catalysts. Firstly, we summarized the rules on how to improve the catalytic performance and anti-poisoning performance of CeO-based catalysts; Secondly, we discussed the effect of light reaction conditions on the thermal coupled catalytic oxidation of toluene; In addition to this, we explored the current status of synergistic multi-pollutant degradation, mainly of toluene; Finally, we summarized the mechanism of catalytic oxidation of toluene by combining theoretical simulation calculations, in-situ infrared analyses, and other means. We present the promising applications of CeO-based catalysts in the catalytic oxidation of toluene, and hope that these summaries will provide an important reference for the catalytic treatment of VOCs.
挥发性有机化合物（VOCs）对人类健康和生态环境构成严重威胁。基于二氧化铈（CeO基）催化剂的热催化氧化被广泛应用于甲苯的降解。然而，诸如如何降低催化氧化过程中的能耗、提高催化剂的抗中毒性能以及增强催化剂的多物种协同催化能力等新问题和挑战不断涌现。在此基础上，我们系统地总结了基于CeO基催化剂的甲苯热催化氧化研究进展现状。首先，我们总结了提高CeO基催化剂催化性能和抗中毒性能的规律；其次，我们讨论了光反应条件对甲苯热耦合催化氧化的影响；除此之外，我们探究了协同多污染物降解的现状，主要是甲苯；最后，我们结合理论模拟计算、原位红外分析等手段总结了甲苯催化氧化的机理。我们展示了CeO基催化剂在甲苯催化氧化中的广阔应用前景，并希望这些总结能为VOCs的催化处理提供重要参考。
