催化作用
非热等离子体
甲苯
化学
介孔材料
氧化还原
化学工程
金属
催化氧化
吸附
氧气
分子筛
选择性
无机化学
等离子体
物理化学
有机化学
物理
量子力学
工程类
作者
Xueyu Hu,Jian Zhang,Yihan Liu,Tiancheng Wen,Xiaohong Yao,Chao Long
标识
DOI:10.1016/j.seppur.2024.126298
摘要
The non-thermal plasma catalysis holds great promise for VOCs removal, and the development of catalysts with electronic metal-support interaction (EMSI) effect is beneficial for VOCs removal. In this study, we prepared three Mn@M catalysts with EMSI coordination structures by encapsulating MnOx particles within the mesoporous molecular sieve (MCM-41) with different pore size (2.9 nm, 4.4 nm, and 7.9 nm), and investigated the effect of pore size on EMSI and non-thermal plasma catalytic performance of Mn@M for toluene. Among three catalysts, Mn@M2 with an average pore size of 4.38 nm exhibited the strongest EMSI and superior redox capabilities, thus demonstrating the highest mineralization rate, carbon balance, and CO2 selectivity for plasma catalytic oxidation of toluene. The EMSI effect leads to the formation of electron-rich and electron-poor centers on the Si-O-Mn-O bond, facilitating the generation of reactive oxygen species and enhancing the oxygen cycle. In addition, the reaction degradation pathway was investigated using in situ DRIFTS and GC–MS. This study provides valuable insights for designing highly effective supported catalysts by pore confinement to degrade VOCs in adsorption-plasma catalysis system.
科研通智能强力驱动
Strongly Powered by AbleSci AI