Yu Wang , Bin Zhou , Jingjie Guo , Tao Liu , Yu Yang , Bing Li , Jiaojiao Yang , Yue Peng , Jianjun Chen , Wenzhe Si , Junhua Li
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Nanoconfinement effects of mesoporous CuMn2O4 spinel for constructing efficient Hg0 removal catalysts
Developing high-performance mercury removal catalysts is essential for addressing atmospheric mercury pollution. Notably, conventional mineral adsorbents are ineffective for high-temperature flue gases (>300 °C). In this study, confinement catalysis was utilized to modify CuMn2O4. Under the chlorine-free catalytic condition, the temperature window of T95 was widened by 150 °C (for 50–400 °C) toward high-temperature. Mechanistic studies suggest that nanoconfinement effects significantly improve the catalytic performance. Molecular oxygen adsorption and activation capacity were dramatically enhanced, as demonstrated by NAP-XPS. The plentiful grain boundaries effectively adjust the defect species and electronic structure of the catalysts in favor of Hg0 catalysis, whereas the porous structure improves the reactant adsorption properties.
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Catalysis Communications aims to provide rapid publication of significant, novel, and timely research results homogeneous, heterogeneous, and enzymatic catalysis.
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