Annealing crystallization and catalytic activity of ultrafine NiB amorphous alloy
Wei, SQ; Li, ZR; Zhang, XY; Chen, CR; Liu, WH; Wang, XG; Hu, TD; Xie, YN; Liu, T; Hu TD(胡天斗); Xie YN(谢亚宁); Liu T(刘涛)
刊名CHINESE SCIENCE BULLETIN
2001
卷号46期号:6页码:471-473
关键词XAFS XRD DTA ultrafine NiB amorphous alloy benzene hydrogenation
学科分类Science & Technology - Other Topics
通讯作者Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100039, Peoples R China
文章类型Article
英文摘要Annealing crystallization of ultrafine NIB amorphous alloy prepared by the chemical reduction method. was studied by DTA, XRD and XAFS techniques. The XRD and XAFS results have revealed that the crystallization process of ultrafine NiB amorphous alloy proceeds in two steps. First, ultrafine NiB amorphous alloy is crystallized to form metastable nanocrystalline Ni3B at an annealing temperature of 325 degreesC, Second, the nanocrystalline Ni3B is further decomposed into crystalline Ni at 380 degreesC or higher temperature, the local structure around Ni atoms in resultant product is similar to that in Ni foil. It was found that the catalytic activity of nanocrystalline Ni3B for benzene hydrogenation is much higher than that of ultrafine NiB amorphous alloy or crystalline Ni, The result indicates that the active sites of nanocrystalline Ni3B for benzene hydrogenation are composed of both Ni and B with proper geometry configuration.
类目[WOS]Multidisciplinary Sciences
研究领域[WOS]Science & Technology - Other Topics
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语种英语
WOS记录号WOS:000168402600007
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237625
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_加速器中心
中国科学院高能物理研究所_多学科研究中心
作者单位中国科学院高能物理研究所
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Wei, SQ,Li, ZR,Zhang, XY,et al. Annealing crystallization and catalytic activity of ultrafine NiB amorphous alloy[J]. CHINESE SCIENCE BULLETIN,2001,46(6):471-473.
APA Wei, SQ.,Li, ZR.,Zhang, XY.,Chen, CR.,Liu, WH.,...&刘涛.(2001).Annealing crystallization and catalytic activity of ultrafine NiB amorphous alloy.CHINESE SCIENCE BULLETIN,46(6),471-473.
MLA Wei, SQ,et al."Annealing crystallization and catalytic activity of ultrafine NiB amorphous alloy".CHINESE SCIENCE BULLETIN 46.6(2001):471-473.
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