Structures and Dynamics of Amorphous Clathrate Hydrates

非晶形笼形水合物的结构和动力学

基本信息

  • 批准号:
    16540368
  • 负责人:
  • 金额:
    $ 2.37万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 财政年份:
    2004
  • 资助国家:
    日本
  • 起止时间:
    2004 至 2005
  • 项目状态:
    已结题

项目摘要

At beginning of the present project, we have developed a vapor-deposition line for preparation of the amorphous samples at low temperature. We have also made major modification on a cryostat for in situ neutron scattering measurements of vapor-deposited samples to use it on MARI spectrometer of Rutherford-Appleton Laboratory.We have prepared amorphous clathrate hydrates of Xe, SF_6, CD_4, Ar gases by using the above apparatus and performed in situ neutron scattering measurements in a temperature range 10-200K. The used neutron spectrometers are HIT (neutron diffraction), SWAN (small-angle neutron scattering), and LAM-D (incoherent inelastic neutron scattering) of High Energy Accelerator Research Organization (KEK), and MARI (high-intensity coherent inelastic neutron scattering) in Rutherford-Appleton Laboratory (RAL, UK).Neutron diffraction and small-angle scattering data revealed that increasing guest content and/or guest size facilitates formation of hydrogen-bonds and resultant local cage like structure of water molecules. These are due to hydroforbic hydration effect. Furthermore, amorphous clathrate hydrates transformed to clathrate hydrate crystals (not ice and guest crystals) on heating the samples up to around 150 K. Incoherent inelastic scattering revealed that above hydrogen-bond formation decreases the intensity of the low-energy phonon excitations. Coherent inelastic scattering showed the quasi-dispersive phonon excitation in amorphous ice and amorphous Xe clathrate hydrate, indicating the existence of quasi-Brillouin zone in amorphous hydrogen-bonded systems.Thus, we have prepared new materials, amorphous clathrate hydrates, and investigated their structures and dynamics systematically by using various neutron scattering methods.
在本项目开始时,我们已经开发了一条气相沉积线,用于低温制备非晶样品。我们还对用于气相沉积样品中子原位散射测量的低温恒温器进行了重大改造,使其可用于卢瑟福-阿普尔顿实验室的MARI光谱仪。利用上述装置制备了Xe、SF_6、CD_4、Ar等气体的非晶态笼形水合物,并在10 ~ 200k的温度范围内进行了原位中子散射测量。使用的中子能谱仪有高能加速器研究组织(KEK)的HIT(中子衍射)、SWAN(小角中子散射)和LAM-D(非相干非弹性中子散射),以及英国Rutherford-Appleton实验室(RAL)的MARI(高强度相干非弹性中子散射)。中子衍射和小角散射数据表明,增加客体含量和客体尺寸有利于氢键的形成和水分子局部笼状结构的形成。这是由于氢盐水化作用。此外,无定形包合物水合物在加热到150k左右时转变为包合物水合物晶体(不是冰和客体晶体)。非相干非弹性散射表明,上述氢键的形成降低了低能声子的激发强度。相干非弹性散射在非晶态冰和非晶态Xe包合物水合物中表现出准色散声子激发,表明非晶态氢键体系中存在准布里渊区。因此,我们制备了新的材料,非晶笼形水合物,并利用各种中子散射方法系统地研究了它们的结构和动力学。

项目成果

期刊论文数量(38)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
NMR and Neutron Scattering Studies on Spherical and Rod-like Micelles of Dodecyltrimethylammonium Bromide in Aqueous Sodium Salicylate Solution
水杨酸钠水溶液中十二烷基三甲基溴化铵球形和棒状胶束的核磁共振和中子散射研究
  • DOI:
  • 发表时间:
    2005
  • 期刊:
  • 影响因子:
    0
  • 作者:
    M.Machida;T.Ishibashi;R.Murashima et al.;G.Yoshida et al.;H.Yoshimitsum et al.;M.Machida et al.;E.Magome et al.;O..Yamamuro;O.Yamamuro et al.;山室 修;山室 修;M.Misawa;O.Yamamuro et al.;O.Yamamuro et al.;M.MIsawa et al.;O.Yamamuro;N.Onoda-Yamamuro;山室 修;N.Onoda-Yamamuro
  • 通讯作者:
    N.Onoda-Yamamuro
Quasielastic Neutron Scattering Study on Polymorphism of Tristearin : Relationship between Dynamical Properties and Subcell Structures
三硬脂酸甘油酯多晶型的准弹性中子散射研究:动力学性质与亚晶格结构的关系
  • DOI:
  • 发表时间:
    2005
  • 期刊:
  • 影响因子:
    0
  • 作者:
    M.Machida;T.Ishibashi;R.Murashima et al.;G.Yoshida et al.;H.Yoshimitsum et al.;M.Machida et al.;E.Magome et al.;O..Yamamuro;O.Yamamuro et al.;山室 修;山室 修;M.Misawa;O.Yamamuro et al.;O.Yamamuro et al.;M.MIsawa et al.;O.Yamamuro;N.Onoda-Yamamuro;山室 修;N.Onoda-Yamamuro;N.Onoda-Yamamuro et al.;C.Akita
  • 通讯作者:
    C.Akita
Stricture and Dynamics of amorphous ices and clathrate hydrates
无定形冰和笼形水合物的结构和动力学
  • DOI:
  • 发表时间:
    2006
  • 期刊:
  • 影响因子:
    0
  • 作者:
    M.Machida;T.Ishibashi;R.Murashima et al.;G.Yoshida et al.;H.Yoshimitsum et al.;M.Machida et al.;E.Magome et al.;O..Yamamuro;O.Yamamuro et al.;山室 修;山室 修;M.Misawa;O.Yamamuro et al.;O.Yamamuro et al.
  • 通讯作者:
    O.Yamamuro et al.
Structural Relaxation and Low-Energy Excitation in Amorphous Ice and Related Glasses
非晶冰及相关玻璃中的结构弛豫和低能激发
中性子散乱と熱測定で見た包接化合物中の水素原子の運動
通过中子散射和热测量观察包合物中氢原子的运动
  • DOI:
  • 发表时间:
    2006
  • 期刊:
  • 影响因子:
    0
  • 作者:
    M.Machida;T.Ishibashi;R.Murashima et al.;G.Yoshida et al.;H.Yoshimitsum et al.;M.Machida et al.;E.Magome et al.;O..Yamamuro;O.Yamamuro et al.;山室 修
  • 通讯作者:
    山室 修
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YAMAMURO Osamu其他文献

YAMAMURO Osamu的其他文献

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{{ truncateString('YAMAMURO Osamu', 18)}}的其他基金

Formation of Simple Molecular Glasses by Low-temperature Vapor-deposition and Thermodynamic and Structural Studies on them
低温气相沉积简单分子玻璃的形成及其热力学和结构研究
  • 批准号:
    22340119
  • 财政年份:
    2010
  • 资助金额:
    $ 2.37万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Glass transitions and low-frequency dynamics of room-temperature ionic liquids
室温离子液体的玻璃化转变和低频动力学
  • 批准号:
    17073004
  • 财政年份:
    2005
  • 资助金额:
    $ 2.37万
  • 项目类别:
    Grant-in-Aid for Scientific Research on Priority Areas
Structure and Dynamics of Vapor-deposited Aqueous Solution Glasses
气相沉积水溶液玻璃的结构与动力学
  • 批准号:
    13640382
  • 财政年份:
    2001
  • 资助金额:
    $ 2.37万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Dynamics of Moiecular Glasses Studied by Using Partially Deuterated Systems
使用部分氘化系统研究分子玻璃动力学
  • 批准号:
    10640369
  • 财政年份:
    1998
  • 资助金额:
    $ 2.37万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Neutron Scattering Study on Low-Energy Excitations in Vapor-Deposited Molecular Glasses
气相沉积分子玻璃低能激发的中子散射研究
  • 批准号:
    08640486
  • 财政年份:
    1996
  • 资助金额:
    $ 2.37万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Calorimetric Study on Structural Relaxation of Molecular Ground
分子基础结构弛豫的量热研究
  • 批准号:
    06804032
  • 财政年份:
    1994
  • 资助金额:
    $ 2.37万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
A Study on the Structural Relaxation by the Simultabeous Measurements of enthalpy and Volume under High Pressure
高压下同时测量焓和体积的结构弛豫研究
  • 批准号:
    04640447
  • 财政年份:
    1992
  • 资助金额:
    $ 2.37万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)

相似海外基金

Gas absorption mechanisms and aggregation behavior during semi-clathrate hydrate slurries formation in a fluidized gas separation process
流化气体分离过程中半笼形水合物浆料形成过程中的气体吸收机制和聚集行为
  • 批准号:
    20K15073
  • 财政年份:
    2020
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  • 项目类别:
    Grant-in-Aid for Early-Career Scientists
CAREER: Influence of electric fields on liquid-to-solid phase change associated with clathrate hydrate formation
职业:电场对与笼形水合物形成相关的液固相变的影响
  • 批准号:
    1653412
  • 财政年份:
    2017
  • 资助金额:
    $ 2.37万
  • 项目类别:
    Standard Grant
Rheological characteristics and CO2 separation behavior in semi-clathrate hydrate slurries for fluidized gas separation process
流化气体分离过程中半笼形水合物浆料的流变特性和 CO2 分离行为
  • 批准号:
    16K18276
  • 财政年份:
    2016
  • 资助金额:
    $ 2.37万
  • 项目类别:
    Grant-in-Aid for Young Scientists (B)
Development of prediction method of equilibrium conditions for clathrate hydrate
笼形水合物平衡条件预测方法的开发
  • 批准号:
    15H02222
  • 财政年份:
    2015
  • 资助金额:
    $ 2.37万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Study of solvent water in the amorphized tetrahydrofuran-clathrate-hydrate from a view point of water polyamorphism
从水多晶现象的角度研究非晶化四氢呋喃笼形水合物中的溶剂水
  • 批准号:
    25400432
  • 财政年份:
    2013
  • 资助金额:
    $ 2.37万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Development of efficient, environment-friendly CO2 capture technology using clathrate hydrate
利用笼形水合物开发高效、环保的二氧化碳捕集技术
  • 批准号:
    25289045
  • 财政年份:
    2013
  • 资助金额:
    $ 2.37万
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    Grant-in-Aid for Scientific Research (B)
Diffusion dynamics of hydrogen molecules in clathrate hydrate
笼形水合物中氢分子的扩散动力学
  • 批准号:
    24740198
  • 财政年份:
    2012
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    $ 2.37万
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surface structure of clathrate hydrate
笼形水合物的表面结构
  • 批准号:
    23540563
  • 财政年份:
    2011
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    $ 2.37万
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    Grant-in-Aid for Scientific Research (C)
CDI-Type II: From Simulation Data to Mechanistic Understanding: Applications to Clathrate Hydrate Nucleation Mechanisms
CDI-Type II:从模拟数据到机理理解:笼形水合物成核机制的应用
  • 批准号:
    1125235
  • 财政年份:
    2011
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Fundamental Study on Gas Separation and Storage Techniques by use of Clathrate Hydrate
笼形水合物气体分离与储存技术基础研究
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    20810016
  • 财政年份:
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