Regeneration of sulfur-poisoned CeO2 catalyst for NH3-SCR of NOx

被引：44
|
作者：
Shi, Yun [1 ,2 ]
Tan, Shan [1 ]
Wang, Xiaoxiang [1 ]
Li, Meifang [1 ]
Li, Sujing [1 ]
Li, Wei [1 ]
机构：
[1] Zhejiang Univ, Inst Ind Ecol & Environm, Minist Educ, Key Lab Biomass Chem Engn, Hangzhou 310027, Zhejiang, Peoples R China
[2] Zhejiang Univ, Inst Environm Engn, Hangzhou 310058, Zhejiang, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2016年 / 86卷
基金：
中国国家自然科学基金;
关键词：
CeO2; NH3-SCR catalyst; Sulfation; Regeneration; NOx; SO2; DIESEL-ENGINE EXHAUST; REDUCTION; OXIDATION; SULFATION; CERIA; SO2; NH3; PERFORMANCE; AMMONIA; H-2-SCR;
D O I：
10.1016/j.catcom.2016.08.004
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effects of regeneration on the activities and structure of CeO2 catalysts for NH3-SCR of NOx have been studied in this article. CeO2 catalyst is deactivated by SO2 for NH3-SCR of NOx in a 200 h long-term operation at 350 degrees C due to the formation of sulfates, and its NOx conversion decreases from 100% to 83% gradually. However, sulfates can be removed from sulfur-poisoned CeO2 catalysts under high temperature thermal treatment in air. After regeneration, NOx conversion of sulfur-poisoned CeO2 catalyst is recovered to about 100% at 350 degrees C. Moreover, the regeneration temperature is related to the nature of the sulfates formed on the sulfur-poisoned CeO2 catalysts. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：67 / 71
页数：5
相关论文
共 50 条
  • [21] Effect of CeO2 nanoparticle sizes on catalytic performances of sulfated CeO2/Al2O3 catalyst in NH3-SCR reaction
    Zhenghua Hu
    Dongqi An
    Lei Zhang
    Xuping Wang
    Siyong Fang
    Xinyun Tian
    Liu Qiu
    Jingfang Sun
    Tingzhen Li
    Lin Dong
    JournalofRareEarths, 2024, 42 (03) : 515 - 522
  • [22] Effect of CeO2 nanoparticle sizes on catalytic performances of sulfated CeO2/Al2O3 catalyst in NH3-SCR reaction
    Hu, Zhenghua
    An, Dongqi
    Zhang, Lei
    Wang, Xuping
    Fang, Siyong
    Tian, Xinyun
    Qiu, Liu
    Sun, Jingfang
    Li, Tingzhen
    Dong, Lin
    JOURNAL OF RARE EARTHS, 2024, 42 (01) : 515 - 522
  • [23] The synergistic promotional effect of W doping and sulfate modification on the NH3-SCR activity of CeO2 catalyst
    Xiong, Zhibo
    Wang, Wei
    Li, Jun
    Huang, Lihao
    Lu, Wei
    MOLECULAR CATALYSIS, 2022, 522
  • [24] Efficient NH3-SCR removal of NOx with highly ordered mesoporous WO3(χ)-CeO2 at low temperatures
    Zhan, Sihui
    Zhang, He
    Zhang, Yu
    Shi, Qiang
    Li, Yi
    Li, XiuJun
    APPLIED CATALYSIS B-ENVIRONMENTAL, 2017, 203 : 199 - 209
  • [25] A comprehensive study on sulfur tolerance of niobia modified CeO2/WO3-TiO2 catalyst for low-temperature NH3-SCR
    Cao, Li
    Wu, Xiaodong
    Chen, Ze
    Ma, Yue
    Ma, Ziran
    Ran, Rui
    Si, Zhichun
    Weng, Duan
    Wang, Baodong
    APPLIED CATALYSIS A-GENERAL, 2019, 580 : 121 - 130
  • [26] Time-resolved in situ DRIFTS study on NH3-SCR of NO on a CeO2/TiO2 catalyst
    Yang, Jie
    Ren, Shan
    Wang, Mingming
    Chen, Zhichao
    Chen, Lin
    Liu, Lian
    CATALYSIS SCIENCE & TECHNOLOGY, 2022, 12 (04) : 1245 - 1256
  • [27] Effects of MnO2 Crystal Phases in MnO2/CeO2 Catalyst for NO Reduction by NH3-SCR
    Shyam Sunder Rao
    Sweta Sharma
    Catalysis Letters, 2024, 154 : 1768 - 1781
  • [28] Regeneration of a sulfur-poisoned selective catalytic reduction catalyst at ambient conditions
    Lee, Hwangho
    Song, Inhak
    Jeon, Se Won
    Hwang, Keon Ha
    Kim, Do Heui
    APPLIED CATALYSIS B-ENVIRONMENTAL, 2024, 341
  • [29] Effects of MnO2 Crystal Phases in MnO2/CeO2 Catalyst for NO Reduction by NH3-SCR
    Rao, Shyam Sunder
    Sharma, Sweta
    CATALYSIS LETTERS, 2024, 154 (04) : 1768 - 1781
  • [30] Effect of sulfate-modified CeO2 with different morphologies on NH3-SCR
    Liu, Yongjun
    Yang, Chunxiao
    Li, Haiyan
    Wang, Guowei
    Xu, Siyuan
    Yang, Meng
    Peng, Guojian
    Yang, Wan
    Chang, Kaizhu
    Zhang, Qiulin
    Chen, Min
    Xia, Futing
    JOURNAL OF THE ENERGY INSTITUTE, 2024, 112
12345