Enhancement of low-temperature activity over Cu-exchanged zeolite beta from organotemplate-free synthesis for the selective catalytic reduction of NO with NH3 in exhaust gas streams

	Enhancement of low-temperature activity over Cu-exchanged zeolite beta from organotemplate-free synthesis for the selective catalytic reduction of NO with NH3 in exhaust gas streams
	Xu, Li 1; Shi, Chuan 1; Zhang, Zhaoshun 1; Gies, Hermann 2; Xiao, Feng-Shou 3; De Vos, Dirk 4; Yokoi, Toshiyuki 5; Bao, Xinhe 6; Feyen, Mathias 7; Maurer, Stefan 7
刊名	microporous and mesoporous materials
	2014-12-01
卷号	200 页码:304-310
关键词	Organotemplate-free Beta zeolite Cu-Beta catalyst NH3-SCR H-2-TPR CO-FTIR
英文摘要	a series of cu-exchanged al-rich beta zeolites from organotemplate-free synthesis was prepared and investigated for selective catalytic reduction (scr) of nox with nh3 in exhaust gas streams. in comparison to conventional cu-beta zeolite with si/al ratio of 19, cu-beta zeolite with si/al ratio of 4 is a superior low-temperature nh3-scr catalyst. very high no conversion (>95%) can be achieved at temperatures as low as 150 to similar to 400 degrees c. xrd, uv-vis-nir and nh3-tpd measurements show that more isolated cu2+ ions are present at the exchange sites of al-rich beta zeolite. the combination of co-ftir and h-2-tpr analysis demonstrates that cu2+ ions could be reduced more readily on the al-rich beta than on the conventional beta probably due to the proximity of the isolated cu2+ ions. these can be correlated to the enhancement of no conversion at lower temperatures over cu-exchanged al-rich beta zeolite. (c) 2014 elsevier inc. all rights reserved.
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, applied ; chemistry, physical ; nanoscience & nanotechnology ; materials science, multidisciplinary
研究领域[WOS]	chemistry ; science & technology - other topics ; materials science
关键词[WOS]	diesel-engine ; ammonia ; sites ; scr ; cu/sapo-34 ; cu-ssz-13 ; cu-zsm-5 ; route ; ions ; ftir
收录类别	SCI
语种	英语
WOS记录号	WOS:000343630100039
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/145874]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Dalian Univ Technol, State Key Lab Fine Chem, Sch Chem, Dalian 116024, Peoples R China 2.Ruhr Univ Bochum, Inst Geol Mineral & Geophys, Bochum, Germany 3.Zhejiang Univ, Dept Chem, Hangzhou 310028, Zhejiang, Peoples R China 4.Katholieke Univ Leuven, Ctr Surface Chem & Catalysis, Leuven, Belgium 5.Tokyo Inst Technol, Chem Resources Lab, Yokohama, Kanagawa 227, Japan 6.Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 7.BASF SE, D-67056 Ludwigshafen, Germany 8.BASF Corp, Chem Res & Engn, Iselin, NJ 08830 USA
推荐引用方式 GB/T 7714	Xu, Li,Shi, Chuan,Zhang, Zhaoshun,et al. Enhancement of low-temperature activity over Cu-exchanged zeolite beta from organotemplate-free synthesis for the selective catalytic reduction of NO with NH3 in exhaust gas streams[J]. microporous and mesoporous materials,2014,200:304-310.
APA	Xu, Li.,Shi, Chuan.,Zhang, Zhaoshun.,Gies, Hermann.,Xiao, Feng-Shou.,...&Zhang, Weiping.(2014).Enhancement of low-temperature activity over Cu-exchanged zeolite beta from organotemplate-free synthesis for the selective catalytic reduction of NO with NH3 in exhaust gas streams.microporous and mesoporous materials,200,304-310.
MLA	Xu, Li,et al."Enhancement of low-temperature activity over Cu-exchanged zeolite beta from organotemplate-free synthesis for the selective catalytic reduction of NO with NH3 in exhaust gas streams".microporous and mesoporous materials 200(2014):304-310.