气候变化领域集成服务门户(CCPortal): High-pressure/low-temperature neutron scattering of gas inclusion compounds: Progress and prospects

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DOI	10.1073/pnas.0610332104
	High-pressure/low-temperature neutron scattering of gas inclusion compounds: Progress and prospects
	Zhao Y.; Xu H.; Daemen L.L.; Lokshin K.; Tait K.T.; Mao W.L.; Luo J.; Currier R.P.; Hickmott D.D.
发表日期	2007
ISSN	0027-8424
起始页码	5727
结束页码	5731
卷号	104 期号:14
英文摘要	Alternative energy resources such as hydrogen and methane gases are becoming increasingly important for the future economy. A major challenge for using hydrogen is to develop suitable materials to store it under a variety of conditions, which requires systematic studies of the structures, stability, and kinetics of various hydrogen-storing compounds. Neutron scattering is particularly useful for these studies. We have developed high-pressure/low- temperature gas/fluid cells in conjunction with neutron diffraction and inelastic neutron scattering instruments allowing in situ and real-time examination of gas uptake/release processes. We studied the formation of methane and hydrogen clathrates, a group of inclusion compounds consisting of frameworks of hydrogen-bonded H2O molecules with gas molecules trapped inside the cages. Our results reveal that clathrate can store up to four hydrogen molecules in each of its large cages with an intermolecular H 2-H2 distance of only 2.93 Å. This distance is much shorter than that in the solid/metallic hydrogen (3.78 Å), suggesting a strong densification effect of the clathrate framework on the enclosed hydrogen molecules. The framework-pressurizing effect is striking and may exist in other inclusion compounds such as metal-organic frameworks (MOFs). Owing to the enormous variety and flexibility of their frameworks, inclusion compounds may offer superior properties for storage of hydrogen and/or hydrogen-rich molecules, relative to other types of compounds. We have investigated the hydrogen storage properties of two MOFs, Cu3[Co(CN)6] 2 and Cu3(BTC)2 (BTC = benzenetricarboxylate), and our preliminary results demonstrate that the developed neutron-scattering techniques are equally well suited for studying MOFs and other inclusion compounds. © 2007 by The National Academy of Sciences of the USA.
英文关键词	Framework-pressurizing effect; Hydrogen storage; Inelastic neutron scattering; Neutron diffraction
语种	英语
scopus关键词	benzene derivative; carboxylic acid derivative; cobalt derivative; copper derivative; hydrogen; methane; hydrogen; water; article; energy resource; gas; hydrogen bond; low temperature; molecular stability; neutron scattering; pressure; priority journal; chemical model; chemical structure; chemistry; equipment design; gas; instrumentation; methodology; neutron diffraction; synthesis; temperature; Equipment Design; Gases; Hydrogen; Hydrogen Bonding; Methane; Models, Chemical; Models, Molecular; Neutron Diffraction; Pressure; Temperature; Water
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159011
作者单位	Zhao, Y., Los Alamos Neutron Science Center, Los Alamos National Laboratory, Los Alamos, NM 87545, United States; Xu, H., Los Alamos Neutron Science Center, Los Alamos National Laboratory, Los Alamos, NM 87545, United States, Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos, NM 87545, United States; Daemen, L.L., Los Alamos Neutron Science Center, Los Alamos National Laboratory, Los Alamos, NM 87545, United States; Lokshin, K., Los Alamos Neutron Science Center, Los Alamos National Laboratory, Los Alamos, NM 87545, United States, Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN 37996, United States; Tait, K.T., Los Alamos Neutron Science Center, Los Alamos National Laboratory, Los Alamos, NM 87545, United States; Mao, W.L., Los Alamos Neutron Science Center, Los Alamos National Laboratory, Los Alamos, NM 87545, United States; Luo, J., Los Alamos Neutron Science Center, Los Alamos National Laboratory, Los Alamos, NM 87545, United S...
推荐引用方式 GB/T 7714	Zhao Y.,Xu H.,Daemen L.L.,et al. High-pressure/low-temperature neutron scattering of gas inclusion compounds: Progress and prospects[J],2007,104(14).
APA	Zhao Y..,Xu H..,Daemen L.L..,Lokshin K..,Tait K.T..,...&Hickmott D.D..(2007).High-pressure/low-temperature neutron scattering of gas inclusion compounds: Progress and prospects.Proceedings of the National Academy of Sciences of the United States of America,104(14).
MLA	Zhao Y.,et al."High-pressure/low-temperature neutron scattering of gas inclusion compounds: Progress and prospects".Proceedings of the National Academy of Sciences of the United States of America 104.14(2007).