HIGH-RESOLUTION ELECTRON-MICROSCOPY CHARACTERIZATION OF PARTIALLY CRYSTALLIZED FE78SI12B10 ALLOY AS A CATALYST

IMR OpenIR

	HIGH-RESOLUTION ELECTRON-MICROSCOPY CHARACTERIZATION OF PARTIALLY CRYSTALLIZED FE78SI12B10 ALLOY AS A CATALYST
	L. Wang; G. W. Qiao; K. H. Kuo; Z. J. Cui; K. Y. Wang
	1993
发表期刊	Journal of Materials Science
ISSN	0022-2461
卷号	28 期号:18 页码:4835-4840
摘要	As a catalyst, partially crystallized Fe78Si12B10 alloy shows a three times higher activity than totally crystallized Fe78Si12B10 in the hydrogenation of CO. High-resolution electron microscopy (HREM) reveals that the catalyst contains a great number of minute (less than 1 0 nm), highly dispersed alpha-Fe particles which act as the major active component. Many tiny B and Si oxide clusters also exist in the amorphous matrix. After being rinsed by a NaOH solution, the catalyst exhibits a decreasing selectivity to methane due to the dissolution or aggregation of B and Si species. After reaction, the sizes of the active particles increase and an overlayer of B or Si species is found over the surface of some alpha-Fe particles. This coverage is thought to be the primary origin of the deactivation of the catalyst.
部门归属	acad sinica,inst met res,atom imaging solids lab,shenyang 110015,peoples r china. acad sinica,inst met res,natl lab rapidly solidified nonequilibrium alloys,shenyang 110015,peoples r china.
关键词	Carbon-monoxide Amorphous Alloy Zr Alloys Hydrogenation Spectroscopy Surfaces
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/39133
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. Wang,G. W. Qiao,K. H. Kuo,et al. HIGH-RESOLUTION ELECTRON-MICROSCOPY CHARACTERIZATION OF PARTIALLY CRYSTALLIZED FE78SI12B10 ALLOY AS A CATALYST[J]. Journal of Materials Science,1993,28(18):4835-4840.
APA	L. Wang,G. W. Qiao,K. H. Kuo,Z. J. Cui,&K. Y. Wang.(1993).HIGH-RESOLUTION ELECTRON-MICROSCOPY CHARACTERIZATION OF PARTIALLY CRYSTALLIZED FE78SI12B10 ALLOY AS A CATALYST.Journal of Materials Science,28(18),4835-4840.
MLA	L. Wang,et al."HIGH-RESOLUTION ELECTRON-MICROSCOPY CHARACTERIZATION OF PARTIALLY CRYSTALLIZED FE78SI12B10 ALLOY AS A CATALYST".Journal of Materials Science 28.18(1993):4835-4840.