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 CuMnO. Under the chlorine-free catalytic condition, the temperature window of T 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 Hg catalysis, whereas the porous structure improves the reactant adsorption properties.

中文翻译：

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介孔CuMn2O4尖晶石构建高效除Hg0催化剂的纳米限域效应

开发高性能除汞催化剂对于解决大气汞污染至关重要。值得注意的是，传统的矿物吸附剂对于高温烟气（>300°C）无效。在这项研究中，利用限制催化来改性 CuMnO。在无氯催化条件下，T的温度窗口向高温方向扩大了150℃（50-400℃）。机理研究表明纳米限域效应显着提高了催化性能。 NAP-XPS 证明，分子氧吸附和活化能力显着增强。丰富的晶界有效地调整了催化剂的缺陷物种和电子结构，有利于Hg催化，而多孔结构则提高了反应物的吸附性能。