Effect of Ti4+ and Sn4+ co-incorporation on the catalytic performance of CeO2 -MnOx catalyst for low temperature NH3-SCR

被引：88
作者：
Chen, Li [1 ,2 ]
Yao, Xiaojiang [1 ]
Cao, Jun [1 ]
Yang, Fumo [2 ,3 ]
Tang, Changjin [4 ]
Dong, Lin [4 ]
机构：
[1] Chinese Acad Sci, Res Ctr Atmospher Environm, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
[2] Chongqing Univ, Sch Urban Construct & Environm Engn, Chongqing 400045, Peoples R China
[3] Sichuan Univ, Natl Engn Res Ctr Flue Gas Desulfurizat, Sch Architecture & Environm, Chengdu 610065, Sichuan, Peoples R China
[4] Nanjing Univ, Ctr Modern Anal, Jiangsu Key Lab Vehicle Emiss Control, Nanjing 210093, Jiangsu, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2019年 / 476卷
基金：
中国国家自然科学基金;
关键词：
CeO2-MnOx-TiO2-SnO2; catalyst; Ti4+ and Sn4+ co-incorporation; Low-temperature NH3-SCR; Catalytic performance; By-product N2O; MNOX-CEO2 MIXED OXIDES; CARBON NANOTUBES; SO2; TOLERANCE; NO REDUCTION; FLUE-GAS; NH3; SCR; RAMAN; CEO2-TIO2; MECHANISM;
D O I：
10.1016/j.apsusc.2019.01.095
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：
A novel Ti4+ and Sn4- co-incorporated CeO2-MnOx based catalyst was synthesized by an inverse co-precipitation method with the purpose of inhibiting the formation of N2O and enhancing the NOx conversion of CeO2-MnOx catalyst for NH3-SCR at low temperature. The obtained catalysts were characterized by a series of XRD, Raman, N-2-physisorption, NH3-TPD, H-2-TPR, XPS, and in situ DRIFTS techniques in details. The experiment results suggested that CeO2-MnOx-TiO2-SnO2 (Ce-Mn-Ti-Sn) catalyst displayed the optimal catalytic performance with an enhancement of 30% compared with CeO2-MnOx(Ce-Mn) in the range of 225-275 degrees C. Moreover, the N2O formation was inhibited remarkably compared to Ce-Mn (152 ppm), and there was no N2O (0 ppm) detected even at 250 degrees C. This is linked to moderate weakening of redox property, more generation of acid sites, enhancement of acidic strength, as well as large amount of Ce3+, oxygen vacancies, and absorbed oxygen species, which are contributed to improving the chemical property of Ce-Mn-Ti-Sn catalyst, and further enhancing the catalytic performance and inhibiting the generation of N2O.
引用
收藏
页码：283 / 292
页数：10
相关论文
共 49 条
[1]   Screening of doped MnOx-CeO2 catalysts for low-templerature NO-SCR [J].
Casapu, Maria ;
Kroecher, Oliver ;
Elsener, Martin .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2009, 88 (3-4) :413-419
[2]   Improvement of Activity and SO2 Tolerance of Sn-Modified MnOx-CeO2 Catalysts for NH3-SCR at Low Temperatures [J].
Chang, Huazhen ;
Chen, Xiaoyin ;
Li, Junhua ;
Ma, Lei ;
Wang, Chizhong ;
Liu, Caixia ;
Schwank, Johannes W. ;
Hao, Jiming .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2013, 47 (10) :5294-5301
[3]   Effect of Sn on MnOx-CeO2 catalyst for SCR of NOx by ammonia: Enhancement of activity and remarkable resistance to SO2 [J].
Chang, Huazhen ;
Li, Junhua ;
Chen, Xiaoyin ;
Ma, Lei ;
Yang, Shijian ;
Schwank, Johannes W. ;
Hao, Jiming .
CATALYSIS COMMUNICATIONS, 2012, 27 :54-57
[4]   Solubility product difference-guided synthesis of Co3O4-CeO2 core-shell catalysts for CO oxidation [J].
Chen, Guozhu ;
Xu, Qihui ;
Wang, Yong ;
Song, Guolong ;
Li, Cuncheng ;
Zhao, Wei ;
Fan, Weiliu .
CATALYSIS SCIENCE & TECHNOLOGY, 2016, 6 (19) :7273-7279
[5]   COLD SELECTIVE CATALYTIC REDUCTION OF NITRIC-OXIDE FOR FLUE-GAS APPLICATIONS [J].
CHEN, JP ;
YANG, RT ;
BUZANOWSKI, MA ;
CICHANOWICZ, JE .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1990, 29 (07) :1431-1435
[6]   CeO2-WO3 Mixed Oxides for the Selective Catalytic Reduction of NOx by NH3 Over a Wide Temperature Range [J].
Chen, Liang ;
Li, Junhua ;
Ablikim, Wijdan ;
Wang, Jun ;
Chang, Huazhen ;
Ma, Lei ;
Xu, Jiayu ;
Ge, Maofa ;
Arandiyan, Hamidreza .
CATALYSIS LETTERS, 2011, 141 (12) :1859-1864
[7]   DRIFT Study on Cerium-Tungsten/Titiania Catalyst for Selective Catalytic Reduction of NOx with NH3 [J].
Chen, Liang ;
Li, Junhua ;
Ge, Maofa .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2010, 44 (24) :9590-9596
[8]   The promoter effect of potassium in CuO/CeO2 systems supported on carbon nanotubes and graphene for the CO-PROX reaction [J].
Dongil, A. B. ;
Bachiller-Baeza, B. ;
Castillejos, E. ;
Escalona, N. ;
Guerrero-Ruiz, A. ;
Rodriguez-Ramos, I. .
CATALYSIS SCIENCE & TECHNOLOGY, 2016, 6 (15) :6118-6127
[9]   Low-temperature selective catalytic reduction of NO with NH3 over nanoflaky MnOx on carbon nanotubes in situ prepared via a chemical bath deposition route [J].
Fang, Cheng ;
Zhang, Dengsong ;
Cai, Sixiang ;
Zhang, Lei ;
Huang, Lei ;
Li, Hongrui ;
Maitarad, Phornphimon ;
Shi, Liyi ;
Gao, Ruihua ;
Zhang, Jianping .
NANOSCALE, 2013, 5 (19) :9199-9207
[10]   Promotional mechanisms of activity and SO2 tolerance of Co- or Ni-doped MnOx-CeO2 catalysts for SCR of NOx with NH3 at low temperature [J].
Gao, Fengyu ;
Tang, Xiaolong ;
Yi, Honghong ;
Li, Jingying ;
Zhao, Shunzheng ;
Wang, Jiangen ;
Chu, Chao ;
Li, Chenlu .
CHEMICAL ENGINEERING JOURNAL, 2017, 317 :20-31
12345