数字农科院2.0

Cerium-optimized high-entropy spinel oxide for efficient and anti-interference removal of VOC from complex flue gas

文献类型： 外文期刊

作者： Ge, Yunyi;Zhang, Xiao;Shen, Feng;Li, Shuhao;Shen, Boxiong

作者机构：

期刊名称： JOURNAL OF MATERIALS CHEMISTRY A

ISSN： 2050-7488

年卷期： 2025 年

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： Efficient catalytic decomposition of volatile organic compounds (VOCs) in complex coal combustion flue gas remains a significant challenge. In this study, we synthesized a spinel-type high-entropy oxide (HEO) catalyst, (CeMnFeCoCr)3O4, to control the representative VOC o-xylene in the simulated complex coal-fired flue gas. Compared with the conventional multi-phase metal oxide (MMO) catalyst, (CeMnFeCoCr)3O4 demonstrated approximately 20% higher activity, resistance to toxic components (SO2 and H2O), and efficient multi-pollutant removal through reduced competitive effects. The advantages of (CeMnFeCoCr)3O4 arose from its unique composition and the synergistic effects within its high-entropy structure: the integration of Ce oxides-typically found in fluorite structures-into the spinel-type HEO promotes oxygen vacancy formation and promotes deep oxidation of o-xylene. The homogeneous distribution of elements contributes to its resistance against poisoning components. The high-entropy configuration promotes charge redistribution among Ce, Mn, Fe, Co, and Cr, activating inert elements (Co and Cr) to generate more active sites, enabling stable co-adsorption and efficient catalysis of multiple pollutants. This work proved the effectiveness and stability of (CeMnFeCoCr)3O4 in purifying complex coal-fired flue gas, potentially expanding the application of high-entropy materials in industrial settings.

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