A new 3DOM Ce-Fe-Ti material for simultaneously catalytic removal of PM and NOx from diesel engines

被引：81
作者：
Cheng, Ying [1 ]
Liu, Jian [1 ]
Zhao, Zhen [1 ]
Song, Weiyu [1 ]
Wei, Yuechang [1 ]
机构：
[1] China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2018年 / 342卷
基金：
中国国家自然科学基金;
关键词：
Three ordered macroporous strtucture material; Soot particulates; Simultaneous removal; NOx; LOW-TEMPERATURE; SOOT COMBUSTION; OXIDE CATALYSTS; CARBON-MONOXIDE; REDUCTION; NH3; PERFORMANCE; CU; OXIDATION; TOLUENE;
D O I：
10.1016/j.jhazmat.2017.08.040
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A new 3DOM material was designed and synthesized for the simultaneous removal of PM (soot particulates) and NOx from diesel engine exhausts. The catalytic purification taking place over the material with double efficacy is cost-efficient. The contact between solid PM and catalyst active site has been process intensified by 3DOM unique structure. 3DOM Ce0.2Fe0.2Ti0.1O2 catalyst possess a high SCR activity and an excellent selectivity to N-2, giving a maximum concentration of CO2 at 385 degrees C for PM combustion and 100% NO conversion in the temperature range of 281-425 degrees C. The dual redox cycles (Fe3+ + Ce3+ Fe2+ + Ce4+,Fe3+ +Ti3+ Fe2+ +Ti4+) and the excellent reducibility and sufficient acid sites of catalysts play key roles for the highly catalytic performance. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：317 / 325
页数：9
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