The promotional role of Ni in FeVO4/TiO2 monolith catalyst for selective catalytic reduction of NOx with NH3

被引：41
|
作者：
Wu, Ganxue [1 ]
Feng, Xi [2 ]
Zhang, Hailong [2 ]
Zhang, Yanhua [2 ]
Wang, Jianli [2 ]
Chen, Yaoqiang [2 ,3 ]
Dan, Yi [1 ]
机构：
[1] Sichuan Univ, Polymer Res Inst, State Key Lab Polymer Mat Engn China, Chengdu 610065, Sichuan, Peoples R China
[2] Sichuan Univ, Coll Chem, Minist Educ China, Key Lab Green Chem & Technol, Chengdu 610064, Sichuan, Peoples R China
[3] Ctr Engn Environm Catalyt Mat Sichuan Prov China, Chengdu 610064, Sichuan, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2018年 / 427卷
关键词：
FeVO4; Nickel; NH3-SCR; Acid sites; Nitrogen oxides (NOx); LOW-TEMPERATURE SCR; OXIDE CATALYSTS; NH3-SCR REACTION; SUPERIOR CATALYST; MIXED OXIDES; AMMONIA; REDOX; PERFORMANCE; OXIDATION; MECHANISM;
D O I：
10.1016/j.apsusc.2017.08.135
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 promotional effect of nickel additive on the catalytic performance of the representative FeVO4/TiO2 for NH3-SCR reaction is systematically studied for the first time in the present work. The experimental results showed that NOx conversion at low temperature and N-2 selectivity could be significantly improved by Ni doping and 0.4Ni-FeV-Ti exhibited the highest NOx removal efficiency. Analysis by XRD, SEM/HR-TEM, Raman, TPD, DRIFTS, TPR and XPS showed that nickel doping effectively promoted the interaction of FeVO4 nanoparticles with TiO2, consequently resulting in an enhanced acidity property, improved redox activity and giving rise to the formation of the surface oxygen vacancies and defect sites (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：24 / 36
页数：13
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