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Synthesis and characterization of Ag-hollandite nanofibers and its catalytic application in ethanol oxidation
Chen, Junli; Tang, Xingfu; Liu, Junlong; Zhan, Ensheng; Li, Juan; Huang, Xiumin; Shen, Wenjie; Huang XM(黄秀敏); Huang XM(黄秀敏)
刊名CHEMISTRY OF MATERIALS
2007-08-21
DOI10.1021/cm070904k
19期:17页:4292-4299
收录类别SCI
文章类型Article
部门归属5
项目归属501
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Materials Science, Multidisciplinary
研究领域[WOS]Chemistry ; Materials Science
关键词[WOS]OCTAHEDRAL MOLECULAR-SIEVES ; MANGANESE OXIDE ; ALKALI-METAL ; SILVER HOLLANDITE ; TUNNEL STRUCTURE ; ION-EXCHANGE ; PHASE ; CRYPTOMELANE ; PERFORMANCE ; EPOXIDATION
英文摘要Ag-hollandite nanofibers were synthesized through a simple hydrothermal process by oxidizing Mn(NO3)(2) with AgMnO4 in aqueous solution. The temperature was found to play an essential role in determining both the crystalline structure and the morphology of the Ag-hollandite materials, whereas the AgMnO4/Mn(NO3)(2) molar ratio affected only the morphology of the product. Ag-hollandite nanofibers with diameters of 20-40 nm and lengths of 0.5-4 mu m were prepared at 160 degrees C and a 2/3 AgMnO4/Mn(NO3)(2) molar ratio. X-ray photoelectron spectroscopy surface analysis revealed that the silver species presented as Ag+ and the average oxidation state of manganese was 3.9. More promisingly, the Ag-hollandite nanofibers showed quite high catalytic performance for ethanol oxidation, with ethanol conversion of 75% and acetaldehyde selectivity of 95% at 230 degrees C for 200 h time-on-stream. The high activity, selectivity, and stability were attributed to the stable presence of Ag+ species and the unique morphology of the Ag-hollandite nanofibers.
语种英语
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WOS记录号WOS:000248692500029
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/98737
专题中国科学院大连化学物理研究所
通讯作者Huang XM(黄秀敏); Huang XM(黄秀敏)
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
Chen, Junli,Tang, Xingfu,Liu, Junlong,et al. Synthesis and characterization of Ag-hollandite nanofibers and its catalytic application in ethanol oxidation[J]. CHEMISTRY OF MATERIALS,2007,19(17):4292-4299.
APA Chen, Junli.,Tang, Xingfu.,Liu, Junlong.,Zhan, Ensheng.,Li, Juan.,...&黄秀敏.(2007).Synthesis and characterization of Ag-hollandite nanofibers and its catalytic application in ethanol oxidation.CHEMISTRY OF MATERIALS,19(17),4292-4299.
MLA Chen, Junli,et al."Synthesis and characterization of Ag-hollandite nanofibers and its catalytic application in ethanol oxidation".CHEMISTRY OF MATERIALS 19.17(2007):4292-4299.
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