Manganese-based catalysts for the catalytic oxidation of chlorinated volatile organic compounds (CVOCs): critical properties, deactivation mechanisms, and design strategies

Abstract

Currently, controlling the emissions of chlorinated volatile organic compounds (CVOCs) has become extremely urgent due to their toxic effects, including teratogenicity, carcinogenicity, and mutagenicity. Catalytic oxidation can efficiently degrade CVOCs at low temperatures with minimal energy consumption, making it highly promising for industrial applications. Transition metal manganese (Mn) plays an essential role in the catalytic oxidation of CVOCs. This review summarizes recent progress in the catalytic oxidation of CVOCs over Mn-based catalysts. It highlights the crucial role of the acidic and redox properties of Mn-based catalysts in the oxidation process. Additionally, the review addresses challenges in applying Mn-based catalysts and outlines potential future research directions. The review also encompasses the catalyst design rationale and corresponding experimental characterization strategies for the application of manganese-based catalysts in the catalytic oxidation of CVOCs. Overall, this review aims to provide valuable insights for the development of efficient and cost-effective Mn-based catalysts for CVOC catalytic oxidation. This review also seeks to encourage further investigation in both academic and industrial contexts, promoting collaborative initiatives to address future challenges related to the environmental remediation of CVOCs via the design and optimization of manganese-based catalysts.