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学科主题: 物理化学
题名: Fibrous Ni nanomaterial derived from α-Ni(OH)2
作者: Li Y(李勇) ;  Jie XW(解小伟) ;  Liu JL(刘俊龙) ;  Shen WJ(申文杰)
会议名称: EruropaCatIX Congress
会议日期: 2009-8-30
出版日期: 2009-08-30
会议地点: 西班牙
其他题名: α-Ni(OH)2制备纤维状Ni纳米材料
通讯作者: 申文杰
部门归属: 五室
主办者: 西班牙化学学会
摘要: α-Ni(OH)2 with hydrotalcite-like structure was prepared by precipitation of nickel acetate and sodium carbonate aqueous solution with the mediation of ethylene glycol at 393 K. Calcination of this precursor at 573-1073 K yielded nickel oxides having diameter of 3-8 nm with inter-layered structure. Hydrogen reduction of the NiO samples formed metallic nickel with fibrous-like morphology. These novel Ni materials showed much higher catalytic activities for the decomposition of methane to hydrogen and carbon nanofibers, with the carbon yield of 498 g C/g Ni. The changes in crystalline size and morphology of Ni during reduction and methane decomposition are well studied by XRD and TEM. The Ni crystallines departed from the fibrous structures and gradually aggregated into particles, which is stabilized at the critical size of 17–18 nm when exposed to the reaction of methane decomposition.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/113542
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Li Y,Jie XW,Liu JL,et al. Fibrous Ni nanomaterial derived from α-Ni(OH)2[C]. 见:EruropaCatIX Congress. 西班牙. 2009-8-30.
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