Research progress of catalytic oxidation of volatile organic compounds over Mn-based catalysts – a review
Chao Sui, Shiping Zeng, Xiangyu Ma, Yue Zhang, JingXin Zhang, Xiaomei Xie
Abstract
Abstract With the rapid development of urbanization and industrialization, environmental pollution has become more severe. Volatile organic compounds (VOCs) could be originated from the following sources: domestic, mobile and industrial sources. As important air pollutants, VOCs could cause serious harm to the environment and human health. Therefore, removing VOCs has become a priority research direction of ecological issues. Among the many elimination methods, catalytic oxidation approaches are among the most effective and economical methods which can transform VOCs into CO 2 and H 2 O. MnO x catalysts are among the most active catalysts, which can be further modified by different cations such as Cu 2+ , Co 2+ , Cr 3+ , Ni 2+ and Ce 4+ to form mixed oxides to improve the catalytic oxidation of VOCs activity. Moreover, MnO x can be loaded on the carrier, improving the redox and oxygen storage capacity and improving its stability and activity. This review explores the structure, preparation and oxidation state of Mn-based catalysts.