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题名: Impacts of MgO promoter and preparation procedure on meso-silica supported nano gold catalysts for carbon monoxide total oxidation at low temperature
作者: Xu, Huiyuan1, 2;  Chu, Wei1;  Luo, Jingjie1;  Zhang, Tao3
关键词: Supported nano gold catalyst ;  MgO promoter ;  Meso silica carrier ;  Precipitation procedure ;  O(2)-TPD
刊名: CHEMICAL ENGINEERING JOURNAL
发表日期: 2011-06-01
DOI: 10.1016/j.cej.2010.12.051
卷: 170, 期:2-3, 页:419-423
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Environmental ;  Engineering, Chemical
研究领域[WOS]: Engineering
英文摘要: The meso silica supported novel nano-size gold catalysts promoted by MgO have been synthesized using deposition-precipitation technique for the total oxidation of carbon monoxide. The effects of MgO promoter and preparation procedure on the structure and performance of gold catalysts have been investigated. Better gold dispersion, smaller average size of Au particles and more oxygen mobility were observed in the Au/MgO/SiO(2)-SH catalyst using NaOH as precipitation agent, over which the turnover frequency (TOF) was much better than that of the sample without promotion. The temperature of the CO total conversion over the sample Au/MgO/SiO(2)-SH is about 250 K lower than that over the silica which directly supported gold catalyst. (C) 2011 Published by Elsevier B.V.
关键词[WOS]: FISCHER-TROPSCH CATALYSTS ;  CO OXIDATION ;  AU CATALYSTS ;  NANOPARTICLES ;  HYDROGENATION ;  1,3-BUTADIENE ;  INERT ;  TIO2 ;  SIO2
语种: 英语
WOS记录号: WOS:000292947200008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142595
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Sichuan Univ, Dept Chem Engn, Chengdu 610065, Sichuan, Peoples R China
2.Yibin Univ, Dept Chem Engn, Yibin 644007, Sichuan, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Xu, Huiyuan,Chu, Wei,Luo, Jingjie,et al. Impacts of MgO promoter and preparation procedure on meso-silica supported nano gold catalysts for carbon monoxide total oxidation at low temperature[J]. CHEMICAL ENGINEERING JOURNAL,2011,170(2-3):419-423.
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