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	Copper-impregnated Al-Ce-pillared clay for selective catalytic reduction of NO by C3H6
	Lin, Qichun ; Hao, Jiming ; Li, Junhua ; Ma, Zifeng ; Lin, Weiming
	2010-05-10 ; 2010-05-10 ; OCT 23-25, 2005
会议名称	CATALYSIS TODAY ; 2nd Japan-China Workshop on Environmental Catalysis and Eco- Materials ; Fukuoka, JAPAN ; Web of Science
关键词	CU/SO42-/Al-Ce-PILC SCR of NO C3H6 acidity copper species AG/AL2O3 CATALYST NITROGEN MONOXIDE LEAN CONDITIONS OXYGEN PROPENE METAL OXIDE HYDROCARBONS ZEOLITE NO(X) Chemistry, Applied Chemistry, Physical Engineering, Chemical
中文摘要	The selective catalytic reduction (SCR) of NO by hydrocarbon is an efficient way to remove NO emission from lean-burn gasoline and diesel exhaust. In this paper, a thermally and hydrothermally stable Al-Ce-pillared clay (Al-Ce-PILC) was synthesized and then modified by SO42-, whose surface area and average pore diameter calcined at 773 K were 161 m(2)/g and 12.15 nm, respectively. Copper-impregnated Al-Ce-pillared clay catalyst (CU/SO42-/Al-Ce-PILC) was applied for the SCR of NO by C3H6 in the presence of oxygen. The catalyst 2 wt% CU/SO42-/Al-Ce-PILC showed good performance over a broad range of temperature, its maximum conversion of NO was 56% at 623 K and remained as high as 22% at 973 K. Furthermore, the presence of 10% water slightly decreased its activity, and this effect was reversible following the removal of water from the feed. Py-IR results showed SO42- modification greatly enhanced the number and strength of Bronsted acidity on the surface of CU/SO42-/Al-Ce-PILC, which played a vital role in the improvement of NO conversion. TPR and XPS results indicated that both Cu+ and isolated Cu2+ species existed on the optimal catalyst, mainly Cu+, as Cu content increased to 5 wt%, another species CuO aggregates which facilitated the combustion of C3H6 were formed.(C) 2007 Elsevier B.V. All rights reserved.
会议录出版者	ELSEVIER SCIENCE BV ; AMSTERDAM ; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/18913]
专题	清华大学
推荐引用方式 GB/T 7714	Lin, Qichun,Hao, Jiming,Li, Junhua,et al. Copper-impregnated Al-Ce-pillared clay for selective catalytic reduction of NO by C3H6[C]. 见:CATALYSIS TODAY, 2nd Japan-China Workshop on Environmental Catalysis and Eco- Materials, Fukuoka, JAPAN, Web of Science.

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