Exploring the effect of calcination temperature and sulphuric acid impregnation treatment on the NH3-SCR activity of cold-rolled sludge

被引:13
作者
Gao, Jian [1 ]
Lu, Chunqiang [1 ]
Su, Wei [2 ]
Li, Zhiqiang [1 ]
Li, Xingyun [1 ]
Zhao, Yannan [1 ]
Deng, Guixian [1 ]
Li, Kongzhai [1 ]
机构
[1] Kunming Univ Sci & Technol, Fac Met & Energy Engn, Kunming 650093, Yunnan, Peoples R China
[2] Univ Sci & Technol Beijing, Sch Energy & Environm Engn, Beijing 100083, Peoples R China
关键词
NOx; Sulfate catalyst; NH3-SCR; Industrial waste-derived catalysts; SO2-tolerance; SELECTIVE CATALYTIC-REDUCTION; NH3; NOX; SCR; PERFORMANCE; MECHANISM; SITES;
D O I
10.1016/j.psep.2022.03.068
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In recent years, sulphate materials have received more and more attention because of high activity in the selective catalytic reduction of nitrogen oxides with ammonia (NH3-SCR). In this paper, a series of catalysts for NH3-SCR were prepared by sulphuric acid impregnation and calcination at different temperatures of cold-rolled sludge which main component is iron oxide. The performance of cold-rolled sludge catalyst was measured by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), temperature programmed-reduction of hydrogen (H2-TPR), temperature programmed desorption of ammonia (NH3-TPD) and X-ray photoelectron spectroscopy (XPS). It was demonstrated that the increase of iron sulphate and Fe3+ content can be observed in the cold-rolled sludge after sulfuric acid impregnation and low temperature calcination (300 celcius), which leads to the improvement of SCR denitration performance. The results show that 100% denitration conversion can be achieved at 280 degrees C via the modified cold-rolled sludge, with 94% of the performance was retained after the introduction of SO2 and H2O for 5 h. There are minor morphological structural changes in the catalyst, while the redox properties and acidity of the catalyst changed significantly after the treatment process of sulfuric acid impregnation and calcination. This means that the enhanced redox properties and acidity of the catalyst play a key role in improving the activity of NH3-SCR.
引用
收藏
页码:658 / 668
页数:11
相关论文
共 40 条
[11]  
Hui-min Wang, 2020, Journal of Fuel Chemistry and Technology, V48, P584, DOI 10.1016/S1872-5813(20)30025-6
[12]   Regulating oxygen activity of perovskites to promote NOx oxidation and reduction kinetics [J].
Hwang, Jonathan ;
Rao, Reshma R. ;
Giordano, Livia ;
Akkiraju, Karthik ;
Wang, Xiao Renshaw ;
Crumlin, Ethan J. ;
Bluhm, Hendrik ;
Shao-Horn, Yang .
NATURE CATALYSIS, 2021, 4 (08) :663-673
[13]   Activating low-temperature NH3-SCR catalyst by breaking the strong interface between acid and redox sites: A case of model Ce2(SO4)3-CeO2 study [J].
Ji, Jiawei ;
Jing, Meizan ;
Wang, Xiuwen ;
Tan, Wei ;
Guo, Kai ;
Li, Lulu ;
Wang, Xin ;
Song, Wang ;
Cheng, Lijun ;
Sun, Jingfang ;
Song, Weiyu ;
Tang, Changjin ;
Liu, Jian ;
Dong, Lin .
JOURNAL OF CATALYSIS, 2021, 399 :212-223
[14]  
Jiang Y., PROCESS SAF ENVIRON, DOI DOI 10.1016/J.PSEP.2022.02.054
[15]   Insights into the co-doping effect of Fe3+ and Zr4+ on the anti-K performance of CeTiOx catalyst for NH3-SCR reaction [J].
Kang, Keke ;
Yao, Xiaojiang ;
Huang, Yike ;
Cao, Jun ;
Rong, Jing ;
Zhao, Wanxia ;
Luo, Wen ;
Chen, Yang .
JOURNAL OF HAZARDOUS MATERIALS, 2021, 416
[16]   Enhancing the K resistance of CeTiOx catalyst in NH3-SCR reaction by CuO modification [J].
Kang K. ;
Yao X. ;
Cao J. ;
Li Z. ;
Rong J. ;
Luo W. ;
Zhao W. ;
Chen Y. .
Journal of Hazardous Materials, 2022, 402
[17]   Structure-Activity Relationships of Hydrothermally Aged Titania-Supported Vanadium-Tungsten Oxide Catalysts for SCR of NOx Emissions with NH3 [J].
Lai, Jun-Kun ;
Jaegers, Nicholas R. ;
Lis, Bar Mosevitzky ;
Guo, Mingyu ;
Ford, Michael E. ;
Walter, Eric ;
Wang, Yong ;
Hu, Jian Zhi ;
Wachs, Israel E. .
ACS CATALYSIS, 2021, 11 (19) :12096-12111
[18]   Electrothermal alloy embedded V2O5-WO3/TiO2 catalyst for NH3-SCR with promising wide operating temperature window [J].
Li, Wei ;
Du, Xuesen ;
Li, Zhi ;
Tao, Yaqin ;
Xue, Jingyu ;
Chen, Yanrong ;
Yang, Zhongqing ;
Ran, Jingyu ;
Rac, Vladislav ;
Rakic, Vesna .
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION, 2022, 159 :213-220
[19]   A neutral and coordination regeneration method of Ca-poisoned V2O5-WO3/TiO2 SCR catalyst [J].
Li, Xiansheng ;
Liu, Changdong ;
Li, Xiang ;
Peng, Yue ;
Li, Junhua .
CATALYSIS COMMUNICATIONS, 2017, 100 :112-116
[20]   Construction of LaFe1-xMnxO3/attapulgite nanocomposite for photo-SCR of NOx at low temperature [J].
Li, Xiazhang ;
Yan, Xiangyu ;
Zuo, Shixiang ;
Lu, Xiaowang ;
Luo, Shiping ;
Li, Zhongyu ;
Yao, Chao ;
Ni, Chaoying .
CHEMICAL ENGINEERING JOURNAL, 2017, 320 :211-221