杨硕,齐子韬,杨春亚,王晓祥,李伟,李素静

• 1:浙江大学 化学工程与生物工程学院， 浙江 杭州 310058

摘要(Abstract)：

挥发性有机污染物(VOCs)的治理是环保的重要课题，催化氧化是十分有效的治理技术。为开发高效的催化剂，以甲苯为研究对象，采用简便的共沉淀法制备一系列Fe掺杂的ε-MnO₂催化剂。其中，Fe₁Mn₅对甲苯氧化的催化活性最高，转化率为90%时的反应温度t₉₀为237 ℃。此外，该催化剂表现出优异的长期运行稳定性和良好的耐水性。通过一系列表征分析，结果表明，Fe的掺杂促进了Fe₁Mn₅氧化物上氧空位的产生，提升了催化剂表面吸附氧物种比例，从而提高了其低温还原性。同时，原位红外分析结果表明，Fe掺杂所产生的表面吸附氧物种促进了甲苯甲基的快速脱氢过程，并促进芳香环中C═C键的断裂。

关键词(KeyWords)： 催化氧化;FeMn氧化物;甲苯;构效关系

Abstract:

Keywords:

基金项目(Foundation): 浙江省“尖兵”研发项目(2022C03073)；浙江省“领雁”研发项目(2022C03146)；浙江省重点研发项目(2021C03165)。

作者(Author): 杨硕,齐子韬,杨春亚,王晓祥,李伟,李素静

DOI: 10.3969/j.issn.1003-9015.2024.01.017

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