Synthesis and characterization of Ag-hollandite nanofibers and its catalytic application in ethanol oxidation

	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
刊名	chemistry of materials
	2007-08-21
卷号	19 期号:17 页码:4292-4299
通讯作者	黄秀敏
产权排序	1;1
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.
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
收录类别	SCI
原文出处	true
语种	英语
WOS记录号	WOS:000248692500029
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/98737]
专题	大连化学物理研究所_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
推荐引用方式 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.,...&Shen, Wenjie.(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.