Research Center for Environmental Material and Pollution Control Technology,University of Chinese Academy of Sciences

挥发性有机物(VOCs)和氮氧化物(NOx)作为细颗粒物(PM2.5)和臭氧(O3)的重要前体物,其减排与控制刻不容缓。含氮挥发性有机物(NVOCs)作为典型的杂原子VOCs,对大气环境和人体健康造成严重危害。在NVOCs的氧化过程中,实现NVOCs和副产物NOx的协同控制至关重要。选择性催化氧化技术是一种高效处理NVOCs的方法,通过该技术能够将废气中的碳氢矿化为CO2和H2O,同时将氮选择性地氧化为N2。在NVOCs选择氧化技术的研究中,开发具有高活性、高选择性和高稳定性的催化剂至关重要。目前,NVOCs选择氧化技术主要使用铂、钯、银等贵金属催化剂和过渡金属氧化物催化剂。系统分析了贵金属和过渡金属氧化物催化剂在NVOCs选择性氧化中的研究进展,阐述了各种催化剂的优势和局限性,特别是深入分析了各类催化剂上NVOCs选择性氧化的反应机理及其影响因素,旨在为开发高性能的NVOCs选择性氧化催化剂和研究NVOCs选择性氧化反应过程与机理提供参考,进而推动NVOCs高效控制技术的开发,支撑NVOCs的高效净化与控制。

Volatile organic compounds (VOCs) and nitrogen oxides (NO), recognized as pivotal pre⁃cursors to PM and O, necessitate the implementation of immediate and stringent reduction and con⁃trol strategies. Nitrogen-containing volatile organic compounds (NVOCs), a quintessential class of het⁃eroatom VOCs, profoundly impact atmospheric quality and public health. Oxidative control technologiestargeting NVOCs require the synergistic reduction of NVOCs and the byproduct NO. Selective catalyticoxidation (SCO) has emerged as an effective technique for NVOC treatment, transforming waste gashydrocarbons into CO and HO, while selectively oxidizing nitrogen constituents to N. The develop⁃ment of SCO catalysts for NVOCs is critical, demanding catalysts with exceptional activity, selectivity,and durability. Current research on SCO catalysts focuses on noble metals such as platinum, palladium,silver, and transition metal oxides. This review examines advancements in noble metal and transitionmetal oxide catalysts for NVOC selective oxidation, outlines the strengths and limitations of various cat⁃alysts, and investigates the selective oxidation reaction mechanisms of NVOCs and their determinantson these catalysts. The aim is to provide insights for the innovation of high-performance catalysts de⁃signed for NVOC selective oxidation and to elucidate the reaction dynamics and mechanisms, ultimatelyadvancing efficient NVOC control technologies and enhancing their effective purification and management.

国家重点研发计划资助项目(2023YFC3707502);国家自然科学基金资助项目(52370123)

赵挺,安伟奇,田宗浩,等.含氮挥发性有机物选择性催化氧化材料研究进展[J].能源环境保护,2024,38(4):101-111.

ZHAO Ting, AN Weiqi, TIAN Zonghao, et al. Advances in selective catalytic oxidation materials for nitrogen⁃containing volatile organic compounds[J]. Energy Environmental Protection, 2024, 38(4): 101-111.