Recent advances in Zeolite-Based catalysts for volatile organic compounds decontamination by thermal catalytic oxidation

Emissions of volatile organic compounds (VOCs) are abundant and ubiquitous, causing severe damage to the ecological environment and human health. Their control and treatment are urgently needed. Catalytic oxidation is a promising remediation technology, particularly suitable for the end − of − pipe treatment of VOCs. Developing highly efficient catalysts is crucial to the wide adaptation of this technology. Zeolite − supported metallic catalysts are among the best choices due to their excellent porosity and structure, adjustable acidity and high stability, which are essential to the catalyst performance. In this review, we present the state-of-the-art in zeolite-based catalyst development, with a focus on three typical ones - ZSM − 5 (MFI), beta (BEA) and X−/Y − zeolite (FAU), for VOC oxidation. Specifically, we examine their chemical characteristics, active center dispersion and stability, the structure, surface acidity and hydrophobicity of the support, and elucidate the synergy between the active centers and the support. Moreover, we document the detailed preparation procedures to modulate these aspects of catalysts, providing a comprehensive guide to designing zeolite − based catalysts for VOC emission control.