文献类型：期刊文献

英文题名：Highly Efficient Oxidation of N, N-Dimethylformamide at Low Temperature over a Mn-based Catalyst by Optimization Support

作者：Ye, Dongsheng[1];Ding, Min[1];Gao, Meixingzi[1];Li, Mingqi[1];Wang, Yu[1];Jin, Lai[1];Zhan, Wangcheng[1];Wang, Li[1];Guo, Yun[1];Dai, Qiguang[1];Guo, Yanglong[1];Wang, Aiyong[1]

机构：[1]East China Univ Sci & Technol, Res Inst Ind Catalysis, Sch Chem & Mol Engn, State Key Lab green Chem Engn & Ind Catalysis, Shanghai 200237, Peoples R China

年份：2025

卷号：504

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20245117562859);WOS:【SCI-EXPANDED(收录号:WOS:001392553600001)】；

基金：This work was supported by the National Key Research and Devel-opment Program of China (2022YFB3504200, 2023YFA1508500) , the National Natural Science Foundation of China (U21A20326) , and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Catalytic oxidation; ZSM-5; Mn-based; NVOCs

摘要：The evaluation of catalytic oxidation of nitrogenous volatile organic compounds (NVOCs) relies on two key indicators: activity and N2 selectivity. In this work, three different supports (SiO2, ZSM-5 and Al2O3) loading with Mn or Mn-Ce were synthesized by deposition-precipitation for catalytic combustion of N, N-Dimethylformamide (DMF). Mn-Ce/ZSM-5 catalyst displayed the best performance for DMF oxidation, achieving 100% DMF conversion and CO2 selectivity at 240 degrees C as well as 90% N2 selectivity at 400 degrees C. It also exhibits excellent water resistance and high stability. All the characterization results indicated that the state of Mn species was positively correlated with catalytic activity. The addition of Ce species weakened the inhibitory interaction between Mn species and Al species, resulting in an elevation in the state of Mn species which was highest of the six catalysts, thus increasing activity. Meanwhile, the rise in surface oxygen species resulted in high CO2 selectivity and rapid oxidation of NH3. Furthermore, Bronsted acid sites on ZSM-5 facilitated NH3-SCR progress, achieving a high N2 selectivity at high temperatures.