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Oxidative steam reforming of methanol on Ce0.9Cu0.1OY catalysts prepared by deposition-precipitation, coprecipitation, and complexation-combustion methods
Shan, WJ; Feng, ZC; Li, ZL; Jing, Z; Shen, WJ; Can, L
关键词Ce0.9cu0.1oy Solid Solution Redox Properties And Oxidative Stream Reforming Of Methanol
刊名JOURNAL OF CATALYSIS
2004-11-15
DOI10.1016/j.jcat.2004.07.010
228期:1页:206-217
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]OXIDE COMPOSITE CATALYSTS ; CARBON-MONOXIDE OXIDATION ; HIGH-ENERGY DIFFRACTION ; FUEL-CELLS ; CUZNAL(ZR)-OXIDE CATALYSTS ; SOLID-SOLUTIONS ; X-RAY ; SELECTIVE PRODUCTION ; RAMAN-SPECTROSCOPY ; REDOX PROPERTIES
英文摘要The production of hydrogen from oxidative steam reforming of methanol has been tested for Ce0.9Cu0.(1)Ogamma catalysts. The catalysts were prepared by deposition-precipitation (dp), coprecipitation (cp), and complexation-combustion (cc) methods. These catalysts were characterized using BET, TEM, X-ray diffraction (XRD), and Raman spectroscopy. A solid solution was formed in the Ce0.9Cu0.(1)Ogamma prepared by complexation-combustion. The incorporation of Cu atoms into CeO2 lattice leads to an increase of oxygen vacancy. XPS results indicated that the Cu+ is the main Cu species for the Ce(0.9)Cu(0.1)Ogamma-cc sample and the synergistic function between Cu2+/Cu+ and Ce4+/Ce3+ occurred in the redox cycle, which is the reason for lower reduction temperatures and improved redox properties as shown in TPR profiles. In the case of the Ce(0.9)Cu(0.1)Ogamma-cp and Ce(0.9)Cu(0.1)Ogamma-dp samples, most CuO dispersed on the CeO2; the poor interaction between CuO and CeO2 does not affect redox properties of CeO2. Methanol conversions higher than 85% with 90% hydrogen yield were obtained for Ce(0.9)Cu(0.1)Ogamma-cc from the oxidative steam reforming of methanol at 240degreesC. However, the catalysts prepared by coprecipitation and the deposition-precipitation method showed methanol conversion lower than 30% at 240degreesC, and less than 60% even at 360degreesC. The high catalytic activity of Ce(0.1)Cu(0.1)Ogamma-cc is mainly related to the formation of solid solution and the improved redox properties. (C) 2004 Published by Elsevier Inc.
语种英语
WOS记录号WOS:000224756800021
引用统计
被引频次:151[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/321008/139603
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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GB/T 7714
Shan, WJ,Feng, ZC,Li, ZL,et al. Oxidative steam reforming of methanol on Ce0.9Cu0.1OY catalysts prepared by deposition-precipitation, coprecipitation, and complexation-combustion methods[J]. JOURNAL OF CATALYSIS,2004,228(1):206-217.
APA Shan, WJ,Feng, ZC,Li, ZL,Jing, Z,Shen, WJ,&Can, L.(2004).Oxidative steam reforming of methanol on Ce0.9Cu0.1OY catalysts prepared by deposition-precipitation, coprecipitation, and complexation-combustion methods.JOURNAL OF CATALYSIS,228(1),206-217.
MLA Shan, WJ,et al."Oxidative steam reforming of methanol on Ce0.9Cu0.1OY catalysts prepared by deposition-precipitation, coprecipitation, and complexation-combustion methods".JOURNAL OF CATALYSIS 228.1(2004):206-217.
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