Fabrication of hydrogen absorption nano-sized non-equilibrium material and observation of the static and dynamic structure by neutron scattering

吸氢纳米非平衡材料的制备及中子散射静动态结构观察

• 批准号: 20360316
• 负责人: FUKUNAGA Toshiharu
• 金额: $ 12.73万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20360316/
• 关键词: 水素吸蔵; 非平衡化合物; 中性子散乱; 原子構造; 動的構造; 水素吸蔵材料; 非平衡材料; 構造解析; X線回折; 構造因子; 原子分布; リバースモンテカルロ法; 水素

The occupation of hydrogen atoms in the nano-graphite, the LaNi_5Dx amorphous alloys, and the Mg_<50>Ni_<50> amorphous alloy, which were synthesized by milling under hydrogen atmosphere, was clarified by a combination of neutron diffraction and Reverse Monte Carlo (RMC) simulation. Then, topological characteristics of Zr_<0.39>Ni_<0.61> and (Zr_<0.39>Ni_<0.61>)D_<0.59> amorphous alloys were investigated by using Voronoi analysis of the RMC model. The SANS curve for the deuterated Mg_2Ni showed the homogeneous distribution of hydrogen atoms. The behavior of hydrogen molecules adsorbed onto the nanospace of porous materials is of great interest and then a direct visualization of deuterium molecules adsorbed on isoreticular metal organic frameworks (IRMOF-1) was carried out by using reverse Monte Carlo simulation based on first principle molecular dynamics simulation and neutron diffraction. During the research period, we have constructed new total scattering spectrometer (NOVA) at the spallation neutron source in MLF facility of J-PARC.

采用<50><50>中子衍射和反向蒙特卡罗（RMC）模拟相结合的方法，对氢气氛下球磨合成的纳米石墨、LaNi_5Dx非晶合金和Mg_Ni_3非晶合金中氢原子的占位进行了研究。然后，利用RMC模型的Voronoi分析方法研究了Zr_<0.39>Ni_<0.61>和（Zr_<0.39>Ni_<0.61>）D_<0.59>非晶合金的拓扑特征。氘代Mg_2Ni的SANS曲线表明氢原子分布均匀。氢分子在多孔材料纳米空间中的吸附行为是一个重要的研究课题，基于第一性原理分子动力学模拟和中子衍射，采用反向蒙特卡罗模拟方法对氘分子在等网格金属有机骨架（IRMOF-1）上的吸附行为进行了直接可视化研究.在研究期间，我们在日本PARC的MLF装置的空间中子源上建造了新的全散射谱仪（NOVA）。

项目成果

Structural studies of hydrogen storage materials by using neutron scattering

利用中子散射研究储氢材料的结构

• 发表时间: 2010
• 作者: Kazuhiro Mori;et al.
• 通讯作者: et al.

Structure of Mg50Ni50 amorphous alloy studied by using X-ray diffraction and reverse Monte Carlo modeling

X射线衍射和逆蒙特卡罗建模研究Mg50Ni50非晶合金的结构

• 发表时间: 2009
• 期刊: Journal of Physics : Conference Series 144
• 作者: W. Zou;Z. He;and K. Hotate;田上和美;大友季哉
• 通讯作者: 大友季哉

Structural features of hydrogen storage alloys studied by SANS

SANS研究的储氢合金的结构特征

• 发表时间: 2009
• 作者: K.Mori;M.Sugiyama;S.Kawabe;K.Iwase;K.Itoh;T.Fukunaga
• 通讯作者: T.Fukunaga

高強度全散乱装置(NOVA)によるリチウムアルミニウムアミドの構造解析

使用高强度全散射装置 (NOVA) 进行氨基铝锂的结构分析

• 发表时间: 2010
• 作者: 池田一貴、大友季哉;等(福永俊晴)
• 通讯作者: 等(福永俊晴)

Characterization of hydrogen absorption/desorption states on lithium-carbon-hydrogen system by neutron diffraction

中子衍射表征锂-碳-氢体系氢吸附/脱附状态

• 发表时间: 2008
• 期刊: Journal of Applied Physics 104
• 作者: H. Miyaoka;K. Itoh;T. Fukunaga;T. Ichikawa;Y. Kojima;H. Fujii
• 通讯作者: H. Fujii