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dc.contributor.authorLin, Zhong-Hua
dc.contributor.authorZhou, Jian-Zhang
dc.contributor.authorWen, Li
dc.contributor.authorFu, Jin-Kun
dc.contributor.authorGu, Ping-Ying
dc.contributor.authorYao, Bing-Xing
dc.contributor.author姚炳新
dc.date.accessioned2011-08-15T13:32:55Z
dc.date.available2011-08-15T13:32:55Z
dc.date.issued2008
dc.identifier.citationApplied Catalysis B: Environmental,Volume 79, Issue 4, 8 March 2008, Pages 402-409zh_CN
dc.identifier.issn0926-3373
dc.identifier.urihttp://dx.doi.org/doi:10.1016/j.apcatb.2007.11.003
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/10425
dc.description.abstractMonodispersed nano-Au/gamma-Al2O3 catalysts for low-temperature oxidation of CO have been prepared via a modified colloidal deposition route, which involves the deposition of dodecanethiolate self-assembled monolayer (SAM)-protected gold nanoparticles (C-12 nano-Au) in hexane on gamma Al2O3 at room temperature. The diameter of the gold nanoparticles deposited on the support is 2.5 +/- 0.8 nm after thermal treatment, and their valence states comprise both the metallic and oxidized states. It is found that the thermal treatment temperature affects significantly the catalytic activity of the catalysts in the processing steps. The catalyst treated at 190 degrees C exhibits considerably higher activity as compared to catalysts treated at 165 and 250 degrees C. A 2.0-wt.% nano-Au/gamma-Al2O3 Catalyst treated at 190 degrees C for 15 h maintains the catalytic activity at nearly 100% CO oxidation for at least 800 IT at 15 degrees C, at least 600 h at 0 degrees C, and even longer than 450 h at -5 degrees C. Evidently, the catalysts obtained using this preparation route show high catalytic activity, particularly at low temperatures, and a good long-term stability. (c) 2007 Elsevier B.V. All rights reserved.zh_CN
dc.language.isoenzh_CN
dc.publisherELSEVIER SCIENCE BVzh_CN
dc.subjectgold catalystzh_CN
dc.subjectalumina supportzh_CN
dc.subjectgold nanoparticlezh_CN
dc.subjectCO oxidationzh_CN
dc.subjectmonodispersityzh_CN
dc.titleMonodispersed gold nanoparticles supported on γ-Al2O3 for enhancement of low-temperature catalytic oxidation of COzh_CN
dc.typeArticlezh_CN


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