Insight into NOx removal mechanism by H2O2 activation via MIL-100(Fe) in an alkaline environment

被引:3
作者
Wang, Xueqi [1 ]
Bao, Jiacheng [1 ]
Zi, Shuangyan [1 ]
Luo, Yaqiong [1 ]
Liu, Chen [1 ]
Zeng, Ziruo [1 ]
Wang, Fei [1 ]
Yang, Jie [1 ]
Shi, Lei [1 ]
Li, Kai [1 ]
Sun, Xin [1 ]
机构
[1] Kunming Univ Sci & Technol, Fac Environm Sci & Engn, 727 Jingmingnan Rd, Kunming 650500, Yunnan, Peoples R China
来源
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2024年 / 12卷 / 05期
基金
中国国家自然科学基金;
关键词
NOx remove; Liquid phase; Peroxide hydrogen; Free radical; Catalytic oxidation; FIRED FLUE-GAS; METAL-ORGANIC FRAMEWORK; FENTON-LIKE; NITRIC-OXIDE; WASTE-WATER; DEGRADATION; OXIDATION; SO2; OPTIMIZATION;
D O I
10.1016/j.jece.2024.113456
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In this study, we used a metal-organic framework (MOF) material named MIL-100(Fe) as a catalyst to activate the H2O2/NaOH system for the efficient removal of NOx. OH- attack the Fe-O bond to break it and Fe(III) is released into the solution & sdot;H2O2 decomposes to HO2- in an alkaline environment and Fe(III) in the dissolved state reacts with it, producing Fe(II) and center dot O2- . The MOF material had a strong electron transfer capability, facilitating the efficient conversion of Fe(III) to Fe(II) by transferring the electrons released during the NO conversion process. This electron transfer process played a crucial role in slowing down the rate of pH increase in the solution and enhancing the utilisation of H2O2. The main reactive oxygen species in this reaction are center dot O2- and center dot OH. By further analyzing the products of the quenching experiments, we propose an interaction mechanism between NO and center dot O2- as well as center dot OH.
引用
收藏
页数:11
相关论文
共 65 条
[1]   The mineral phase reconstruction of copper slag as Fenton-like catalysts for catalytic oxidation of NOx and SO2: Variation in active site and radical formation pathway [J].
Bao, Jiacheng ;
Yang, Jie ;
Song, Xin ;
Han, Rui ;
Ning, Ping ;
Lu, Xuebin ;
Fan, Maohong ;
Wang, Chi ;
Sun, Xin ;
Li, Kai .
CHEMICAL ENGINEERING JOURNAL, 2022, 450
[2]   Study on the role of copper converter slag in simultaneously removing SO2 and NOx using KMnO4/copper converter slag slurry [J].
Bao, Jiacheng ;
Li, Kai ;
Ning, Ping ;
Wang, Chi ;
Song, Xin ;
Luo, Yansu ;
Sun, Xin .
JOURNAL OF ENVIRONMENTAL SCIENCES, 2021, 108 :33-43
[3]  
Beckman JS, 1996, AM J PHYSIOL-CELL PH, V271, pC1424
[4]   Homogeneous and heterogeneous photolysis of nitrate in the atmosphere: state of the science, current research needs, and future prospects [J].
Cao, Yiqun ;
Ma, Qingxin ;
Chu, Biwu ;
He, Hong .
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING, 2023, 17 (04)
[5]   Accurate identification of radicals by in-situ electron paramagnetic resonance in ultraviolet-based homogenous advanced oxidation processes [J].
Chen, Long ;
Duan, Jun ;
Du, Penghui ;
Sun, Weiliang ;
Lai, Bo ;
Liu, Wen .
WATER RESEARCH, 2022, 221
[6]   Novel strategy of using a C/C electrodes electro-activated peroxymonosulfate to remove NO from simulated flue gas [J].
Chen, Xiaojiao ;
Wang, Yingyi ;
Hu, Xiaomin .
SEPARATION AND PURIFICATION TECHNOLOGY, 2021, 257
[7]   Confining Free Radicals in Close Vicinity to Contaminants Enables Ultrafast Fenton-like Processes in the Interspacing of MoS2 Membranes [J].
Chen, Yu ;
Zhang, Gong ;
Liu, Huijuan ;
Qu, Jiuhui .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2019, 58 (24) :8134-8138
[8]   Insights into the mechanism of nonradical reactions of persulfate activated by carbon nanotubes: Activation performance and structure-function relationship [J].
Cheng, Xin ;
Guo, Hongguang ;
Zhang, Yongli ;
Korshin, Gregory V. ;
Yang, Bo .
WATER RESEARCH, 2019, 157 :406-414
[9]   Simultaneous removal of NOX and SO2 from coal-fired flue gas by catalytic oxidation-removal process with H2O2 [J].
Ding, Jie ;
Zhong, Qin ;
Zhang, Shule ;
Song, Fujiao ;
Bu, Yunfei .
CHEMICAL ENGINEERING JOURNAL, 2014, 243 :176-182
[10]   Catalysts for fast and NO2 SCR reactions for the removal of nitrogen oxides emitted from various sources: Recent advances, mechanisms, and future directions [J].
Elkaee, Sahar ;
Kim, Seul Yi ;
Phule, Ajit Dattatray ;
Zaman, Md. Wahad Uz ;
Lee, Sang Gyu ;
Park, Gibeom ;
Yang, Jae Hwan .
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, 2023, 11 (06)