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Selective catalytic reduction of NO with propene over Au/CeO2/Al2O3 catalysts
Wang, Xinkui; Wang, Aiqin; Wang, Xiaodong; Yang, Xuefeng; Zhang, Tao; Zhang T(张涛); Zhang T(张涛)
关键词Gold Ceria Scr No Propene
刊名GOLD BULLETIN
2007
40期:1页:52-58
收录类别SCI
文章类型Article
部门归属15
项目归属1501
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Inorganic & Nuclear ; Chemistry, Physical ; Materials Science, Multidisciplinary
研究领域[WOS]Chemistry ; Materials Science
关键词[WOS]VOLATILE ORGANIC-COMPOUNDS ; LEAN-BURN CONDITIONS ; CARBON-MONOXIDE ; CO OXIDATION ; NITROGEN MONOXIDE ; SUPPORTED RHODIUM ; GOLD CATALYSTS ; EXCESS OXYGEN ; METAL-OXIDES ; NITRIC-OXIDE
英文摘要Selective catalytic reduction of NO by propene under an oxygen-rich atmosphere has been investigated over Au/ CeO2, Au/CeO2,/Al2O3 and Au/Al2O3 catalysts prepared by deposition-precipitation. The results demonstrated that Au/16%CeO2/Al2O3 had good low-temperature activity, selectivity towards N-2 and stability, which is superior to that of Pt/Al2O3. It was also found that adding 2% water vapour to the feed stream enhanced the NO conversions at low temperatures while the presence of 20 ppm SO 2 increased NO conversions at higher temperatures. It is particularly interesting that under the simultaneous presence of 2% water vapour and 20 ppm SO2 the NO conversions to N-2 were significantly increased and the temperature window was widened significantly. The catalysts were characterized by Xray diffraction (XRD), high resolution transmission electron microscopy coupled with energy dispersive X-ray spectroscopy (HRTEM-EDX) and temperature-programmed reduction (H-2-TPR) techniques. Both XRD and HRTEM revealed that CeO2 was highly dispersed on the alumina support, and HRTEM combined with EDX showed that gold particles were preferentially deposited on those highly dispersed CeO2 particles. The gold deposition made CeO2 more reducible and interaction between gold and those highly dispersed CeO2. particles became stronger than that with the bulk CeO2, and this interaction is probably responsible for the superior catalytic performance of the Au/CeO2/Al2O3.
语种英语
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WOS记录号WOS:000246857400009
引用统计
被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/98647
专题中国科学院大连化学物理研究所
通讯作者Zhang T(张涛); Zhang T(张涛)
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Dalian Univ Technol, Lab Plasma Phys Chem, Dalian 116023, Peoples R China
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GB/T 7714
Wang, Xinkui,Wang, Aiqin,Wang, Xiaodong,et al. Selective catalytic reduction of NO with propene over Au/CeO2/Al2O3 catalysts[J]. GOLD BULLETIN,2007,40(1):52-58.
APA Wang, Xinkui.,Wang, Aiqin.,Wang, Xiaodong.,Yang, Xuefeng.,Zhang, Tao.,...&张涛.(2007).Selective catalytic reduction of NO with propene over Au/CeO2/Al2O3 catalysts.GOLD BULLETIN,40(1),52-58.
MLA Wang, Xinkui,et al."Selective catalytic reduction of NO with propene over Au/CeO2/Al2O3 catalysts".GOLD BULLETIN 40.1(2007):52-58.
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