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题名: Synthesis of Mesoporous Cu-Mn-Al2O3 Materials and Their Applications to Preferential Catalytic Oxidation of CO in a Hydrogen-rich Stream
作者: Fang De-ren1, 2;  Ren Wan-zhong1, 2;  Liu Zhong-min;  Xu Xiu-feng1, 2;  Zhang Hui-min1, 2;  Liao Wei-ping1, 2
关键词: Cu-Mn-Al2O3 ;  Mesoporous material ;  Selective CO oxidation ;  Hydrogen-rich ;  Catalyst
刊名: CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
发表日期: 2010
卷: 26, 期:1, 页:105-109
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: A series of mesoporous Cu-Mn-Al2O3(CMA) materials was synthesized at moderate temperature and their structures were characterized by XRD. N-2 physical adsorption and TPR techniques. It was found that using metal complex ion[Cu(NH3)(4)(2+)-Mn(NH3)(6)(2+)] as raw materials is easier to form good-structure mesoporous Cu-Mn-Al2O3 materials than using its nitrate salt [Cu(NO3)(2)-Mn(NO3)(2)]. The TPR tests. results indicate that CuO and MnO. were homogeneously dispersed in the mesoporous materials. Their catalytic application to preferential catalytic oxidation of CO in a hydrogen-rich stream was studied. The activity varies in the order of CMA(1:1, molar ratio)> CMA(1:2)>CMA(2:1)>CMA(CP)>CMA(1:0)approximate to CMA(0:1). The CMA(1:0) and CMA(0:1) have lower activity compared to other samples, implying that there existed coordination effect between Cu-Mn in the samples. The selectivity varied in the order or CMA(0:1)>= CMA(1:2)>CMA(1:1)>CMA(2:1)>CMA(1:0) at higher temperature (>= 120 degrees C), indicating that increasing the Cu content enhanced the conversion of H-2. The sample CMA(CP) made by coprecipitation method has a lower CO oxidation activity and selectivity than its counter-parts of mesoporous Cu-Mn-Al2O3 materials[CMA(1:2)], this attributed to the lower surface area of the former and poor interaction of CuO with MnOx.
关键词[WOS]: CARBON-MONOXIDE ;  H-2-RICH GAS ;  H-2 ;  PT/GAMMA-AL2O3 ;  KINETICS ;  EXCESS
语种: 英语
WOS记录号: WOS:000275045500021
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141769
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.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Yantai Univ, Inst Appl Catalysis, Yantai 264005, Peoples R China

Recommended Citation:
Fang De-ren,Ren Wan-zhong,Liu Zhong-min,et al. Synthesis of Mesoporous Cu-Mn-Al2O3 Materials and Their Applications to Preferential Catalytic Oxidation of CO in a Hydrogen-rich Stream[J]. CHEMICAL RESEARCH IN CHINESE UNIVERSITIES,2010,26(1):105-109.
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