The promoted performance of CeO2 catalyst for NH3-SCR reaction by NH3 treatment

被引：93

作者：

Sun, Xiao ^{[1
,2
]}

Guo, Rui-tang ^{[1
,2
,3
]}

Liu, Shuai-wei ^{[1
,2
]}

Liu, Jian ^{[1
,2
]}

Pan, Wei-guo ^{[1
,2
]}

Shi, Xu ^{[1
,2
]}

Qin, Hao ^{[1
,2
]}

Wang, Zhong-yi ^{[1
,2
]}

Qiu, Zhong-zhu ^{[1
,2
]}

Liu, Xing-yu ^{[1
,2
]}

机构：

[1] Shanghai Univ Elect Power, Sch Energy Source & Mech Engn, Shanghai 200090, Peoples R China

[2] Shanghai Engn Res Ctr Power Generat Environm Prot, Shanghai 200090, Peoples R China

[3] Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2018年 / 462卷

基金：

国家重点研发计划;

关键词：

SCR; CeO2; NH3; treatment; NOx; Activity; LOW-TEMPERATURE SCR; CE/TIO2; CATALYST; NO REDUCTION; MIXED OXIDES; DEACTIVATION MECHANISM; ENHANCED PERFORMANCE; DRIFT; RESISTANCE; MN/TIO2; CERIA;

D O I：

10.1016/j.apsusc.2018.08.114

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：

In this study, NH3 treatment of CeO2 was found to significantly enhance its NH3-SCR performance. The NH3- treated CeO2 was characterized by BET, XRD, TPR and XPS. The obtained results revealed the excellent SCR activity and stability of CeO2 catalyst treated by NH3 should be originated from the dropped crystallinity, better reducibility, along with the production of more Ce3+ and surface adsorbed oxygen. Furthermore, in situ DRIFT study has been carried out and the results indicated that the Langmuir-Hinshelwood (L-H) mechanism could be applied for explaining the SCR reaction route over CeO2-N.

引用

页码：187 / 193

页数：7

共 37 条

[1] Ce-Based Catalysts for the Selective Catalytic Reduction of NOx in the Presence of Excess Oxygen and Simulated Diesel Engine Exhaust Conditions [J].

Boningari, Thirupathi ;

Somogyvari, Arpad ;

Smimiotis, Panagiotis G. .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2017, 56 (19) :5483-5494

[2] DRIFT Study of CuO-CeO2-TiO2 Mixed Oxides for NOx Reduction with NH3 at Low Temperatures [J].

Chen, Lei ;

Si, Zhichun ;

Wu, Xiaodong ;

Weng, Duan .

ACS APPLIED MATERIALS & INTERFACES, 2014, 6 (11) :8134-8145

[3] Oxidation of Sulfur Dioxide over V2O5/TiO2 Catalyst with Low Vanadium Loading: A Theoretical Study [J].

Du, Xuesen ;

Xue, Jingyu ;

Wang, Xiangmin ;

Chen, Yanrong ;

Ran, Jingyu ;

Zhang, Li .

JOURNAL OF PHYSICAL CHEMISTRY C, 2018, 122 (08) :4517-4523

[4] Supported metal sulfates on Ce-TiOx as catalysts for NH3-SCR of NO: High resistances to SO2 and potassium [J].

Du, Xuesen ;

Wang, Xiangmin ;

Chen, Yanrong ;

Gao, Xiang ;

Zhang, Li .

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, 2016, 36 :271-278

[5] 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

[6] Preparation and characterization of CeO2/TiO2 catalysts for selective catalytic reduction of NO with NH3 [J].

Gao, Xiang ;

Jiang, Ye ;

Fu, Yincheng ;

Zhong, Yi ;

Luo, Zhongyang ;

Cen, Kefa .

CATALYSIS COMMUNICATIONS, 2010, 11 (05) :465-469

[7] The enhanced performance of ceria with surface sulfation for selective catalytic reduction of NO by NH3 [J].

Gu, Tingting ;

Liu, Yue ;

Weng, Xiaole ;

Wang, Haiqiang ;

Wu, Zhongbiao .

CATALYSIS COMMUNICATIONS, 2010, 12 (04) :310-313

[8] Mechanistic Investigation of the Promotion Effect of Bi Modification on the NH3-SCR Performance of Ce/TiO2 Catalyst [J].

Guo, Rui-tang ;

Li, Ming-yuan ;

Sun, Peng ;

Pan, Wei-guo ;

Liu, Shu-ming ;

Liu, Jian ;

Sun, Xiao ;

Liu, Shuai-wei .

JOURNAL OF PHYSICAL CHEMISTRY C, 2017, 121 (49) :27535-27545

[9] A Highly Effective MnNdOx Catalyst for the Selective Catalytic Reduction of NOx with NH3 [J].

Guo, Rui-tang ;

Sun, Peng ;

Pan, Wei-guo ;

Li, Ming-yuan ;

Liu, Shu-ming ;

Sun, Xiao ;

Liu, Shuai-wei ;

Liu, Jian .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2017, 56 (44) :12566-12577

[10] Preparation and characterization of CeOx@MnOx core-shell structure catalyst for catalytic oxidation of NO [J].

Guo, Rui-tang ;

Chen, Qi-lin ;

Ding, Hong-lei ;

Wang, Qing-shan ;

Pan, Wei-guo ;

Yang, Ning-zhi ;

Lu, Chen-zi .

CATALYSIS COMMUNICATIONS, 2015, 69 :165-169

← 1 2 3 4 →