Mo doping as an effective strategy to boost low temperature NH3-SCR performance of CeO2/TiO2 catalysts

被引：47

作者：

Li, Lulu ^{[1
]}

Tan, Wei ^{[2
]}

Wei, Xiaoqian ^{[2
]}

Fan, Zhongxuan ^{[2
]}

Liu, Annai ^{[2
]}

Guo, Kai ^{[2
]}

Ma, Kaili ^{[2
]}

Yu, Shuohan ^{[2
]}

Ge, Chengyan ^{[4
]}

Tang, Changjin ^{[2
]}

Dong, Lin ^{[1
,3
]}

机构：

[1] Nanjing Univ, Sch Environm, Nanjing 210093, Jiangsu, Peoples R China

[2] Nanjing Univ, Sch Chem & Chem Engn, Nanjing 210093, Jiangsu, Peoples R China

[3] Nanjing Univ, Ctr Modern Anal, Jiangsu Key Lab Vehicle Emiss Control, Nanjing 210093, Jiangsu, Peoples R China

[4] YanCheng Inst Technol, Sch Chem & Chem Engn, Yancheng 224051, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2018年 / 114卷

基金：

中国国家自然科学基金;

关键词：

CeO2/TiO2; Mo doping; Low-temperature SCR activity; SO2; resistance; OXYGEN REDUCTION REACTION; SO2; SCR;

D O I：

10.1016/j.catcom.2018.05.015

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 CeO2/TiO2-MoO3 (Ce/TM) catalyst was synthesized by using of Mo as a bulk dopant to boost the NH3-SCR performance of CeO2/TiO2 catalyst. It displayed 100% NO conversion at 200-350 degrees C under 60,000 mlg(-1)h(-1) and high tolerance to H2O and SO2 at 250 degrees C. Characterization results manifested that the doping of Mo not only resulted in more Bronsted acid and Lewis acid sites formed on the Ce/TM surface, but also increased the specific surface area and redox ability of the catalyst, all of which account for the enhanced NH3-SCR activity.

引用

页码：10 / 14

页数：5

共 8 条

[1] Effect of Sn on MnOx-CeO2 catalyst for SCR of NOx by ammonia: Enhancement of activity and remarkable resistance to SO2
Chang, Huazhen
Li, Junhua
Chen, Xiaoyin
Ma, Lei
Yang, Shijian
Schwank, Johannes W.
Hao, Jiming
[J]. CATALYSIS COMMUNICATIONS, 2012, 27 : 54 - 57
[2] Promotional Effects of Ti on a CeO2-MoO3 Catalyst for the Selective Catalytic Reduction of NOx with NH3
Geng, Yang
Chen, Xiaoling
Yang, Shijian
Liu, Fudong
Shan, Wenpo
[J]. ACS APPLIED MATERIALS & INTERFACES, 2017, 9 (20) : 16952 - 16959
[3] Ultra-low loading of copper modified TiO2/CeO2 catalysts for low-temperature selective catalytic reduction of NO by NH3
Li, Lulu
Zhang, Lei
Ma, Kaili
Zou, Weixin
Cao, Yuan
Xiong, Yan
Tang, Changjin
Dong, Lin
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2017, 207 : 366 - 375
[4] Low-temperature SCR activity and SO2 deactivation mechanism of Ce-modified V2O5-WO3/TiO2 catalyst
Ma, Ziran
Wu, Xiaodong
Feng, Ya
Si, Zhichun
Weng, Duan
Shi, Lei
[J]. PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL, 2015, 25 (04) : 342 - 352
[5] Moghadam R. Alipour, 2017, APPL CATAL B-ENVIRON, V201, P419
[6] Synthesis of Ti0.7Mo0.3O2 supported-Pt nanodendrites and their catalytic activity and stability for oxygen reduction reaction
Trung-Thanh Nguyen
Van Thi Thanh Ho
Pan, Chun-Jern
Liu, Jyong-Yue
Chou, Hung-Lung
Rick, John
Su, Wei-Nien
Hwang, Bing-Joe
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2014, 154 : 183 - 189
[7] Interplay between Molybdenum Dopant and Oxygen Vacancies in a TiO2 Support Enhances the Oxygen Reduction Reaction
Tsai, Meng-Che
Trung-Thanh Nguyen
Akalework, Nibret Gebeyehu
Pan, Chun-Jern
Rick, John
Liao, Yen-Fa
Su, Wei-Nien
Hwang, Bing-Joe
[J]. ACS CATALYSIS, 2016, 6 (10): : 6551 - 6559
[8] CERIA IN AUTOMOTIVE EXHAUST CATALYSTS .1. OXYGEN STORAGE
YAO, HC
YAO, YFY
[J]. JOURNAL OF CATALYSIS, 1984, 86 (02) : 254 - 265

← 1 →