Journal ArticleDOI
Tuning clathrate hydrates for hydrogen storage
Huen Lee,Jongwon Lee,Do Youn Kim,Jeasung Park,Yutaek Seo,Huang Zeng,Igor L. Moudrakovski,Christopher I. Ratcliffe,John A. Ripmeester +8 more
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TLDR
Hydrogen storage capacities in THF-containing binary-clathrate hydrates can be increased to ∼4 wt% at modest pressures by tuning their composition to allow the hydrogen guests to enter both the larger and the smaller cages, while retaining low-pressure stability.Abstract:
The storage of large quantities of hydrogen at safe pressures is a key factor in establishing a hydrogen-based economy. Previous strategies--where hydrogen has been bound chemically, adsorbed in materials with permanent void space or stored in hybrid materials that combine these elements--have problems arising from either technical considerations or materials cost. A recently reported clathrate hydrate of hydrogen exhibiting two different-sized cages does seem to meet the necessary storage requirements; however, the extreme pressures (approximately 2 kbar) required to produce the material make it impractical. The synthesis pressure can be decreased by filling the larger cavity with tetrahydrofuran (THF) to stabilize the material, but the potential storage capacity of the material is compromised with this approach. Here we report that hydrogen storage capacities in THF-containing binary-clathrate hydrates can be increased to approximately 4 wt% at modest pressures by tuning their composition to allow the hydrogen guests to enter both the larger and the smaller cages, while retaining low-pressure stability. The tuning mechanism is quite general and convenient, using water-soluble hydrate promoters and various small gaseous guests.read more
Citations
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Theoretical investigation of an acid catalyst for viable release of H2 from BN nanotubes: A local pair natural orbital coupled cluster approach
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Preparation of tetrahydrofuran clathrate hydrate membrane with a molecular sieving effect
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On the Importance of Diox Concentration in Promoting Ch4 Hydrate Formation: A Thermodynamic and Kinetic Investigation
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Exploring the world of metal nitrides as hydrogen storage materials: a DFT study
Saba Niaz,Altaf Hussain Pandith +1 more
TL;DR: In this paper, theoretical studies on some novel metal nitrides in order to probe its hydrogen storage potential have been conducted and it has revealed that doping of alkali metal atoms on the nitride systems increases their hydrogen adsorption ability due to the electron transfer that occurs from the metal atom to the nitrogen surface.
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Pressure Influence on Salt Migration in Frozen Hydrate-Saturated Sediments: Experimental Modeling
Evgeny Chuvilin,Valentina Ekimova,Dinara Davletshina,Ekaterina Krivokhat,Vladimir Shilenkov,Boris Bukhanov +5 more
TL;DR: In this article , the interaction of frozen hydrate-saturated sediments with NaCl solutions is simulated in physical experiments at different gas pressures from 0.1 to 4.0 MPa and at a constant negative temperature of around −6.0 °C.
References
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Book
Infrared and Raman Spectra of Inorganic and Coordination Compounds
TL;DR: In this article, the normal modes of vibration are illustrated and corresponding vibrational frequencies are listed for each type, including diatomic, triatomic, fouratomic, five-atomic, six-atomic and seven-atomic types.
Journal ArticleDOI
Hydrogen-storage materials for mobile applications
TL;DR: Recent developments in the search for innovative materials with high hydrogen-storage capacity are presented.
Journal ArticleDOI
Hydrogen Storage in Microporous Metal-Organic Frameworks
Nathaniel L. Rosi,Juergen Eckert,Mohamed Eddaoudi,David T. Vodak,Jaheon Kim,Michael O'Keeffe,Omar M. Yaghi +6 more
TL;DR: Inelastic neutron scattering spectroscopy of the rotational transitions of the adsorbed hydrogen molecules indicates the presence of two well-defined binding sites (termed I and II), which are associated with hydrogen binding to zinc and the BDC linker, respectively.
Book
Comprehensive Supramolecular Chemistry
Jerry L. Atwood,Jean-Marie Lehn +1 more
TL;DR: The aim of this book is to provide a history of Supramolecular Chemistry from its inception in the 1920s to the present day, with a focus on the period between 1950 and 1983.
Journal ArticleDOI
Hydrogen clusters in clathrate hydrate.
Wendy L. Mao,Wendy L. Mao,Ho-kwang Mao,Alexander F. Goncharov,Viktor V. Struzhkin,Quanzhong Guo,J. Z. Hu,Jinfu Shu,Russell J. Hemley,Maddury Somayazulu,Yusheng Zhao +10 more
TL;DR: High-pressure Raman, infrared, x-ray, and neutron studies show that H2 and H2O mixtures crystallize into the sII clathrate structure with an approximate H2/H2Omolar ratio of 1:2.