Stable Low-Pressure Hydrogen Clusters Stored in a Binary Clathrate Hydrate

• Published in: Science (American Association for the Advancement of Science) Vol. 306; no. 5695; pp. 469 - 471
• Main Authors: Florusse, Louw J., Peters, Cor J., Schoonman, Joop, Hester, Keith C., Koh, Carolyn A., Dec, Steven F., Marsh, Kenneth N., Sloan, E. Dendy
• Format: Journal Article
• Language: English
• Published: Washington, DC American Association for the Advancement of Science 15.10.2004; The American Association for the Advancement of Science
• Subjects: Chemical equilibrium; Chemistry; Clathrates; Condensed matter: structure, mechanical and thermal properties; Crystal structure; Crystalline polymers; Diffraction; Exact sciences and technology; Gas research; Gaseous fuels research; General and physical chemistry; Hydrates; Hydrogen; Hydrogen as fuel; Ice; Inorganic compounds; Ion-exchange; Liquids; Low pressure; Miscellaneous; Molecular spectra; Molecules; Physics; Properties; Spectroscopy; Spectrum analysis; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Surface physical chemistry; Thermodynamics; Water; Water pressure; United States; Hydrogen storage; Stabilization; Molecular cluster; Crystal chemistry; Clathrate; Experimental study; X ray diffraction; Tetrahydrofurane; Additive; Low pressure; Thermodynamic analysis; Inclusion compound; NMR spectrum; Raman spectrum; Hydrates
• ISSN: 0036-8075; 1095-9203
• DOI: 10.1126/science.1102076

Thermodynamic, x-ray diffraction, and Raman and nuclear magnetic resonance spectroscopy measurements show that clusters of H2can be stabilized and stored at low pressures in a sII binary clathrate hydrate. Clusters of H2molecules occupy small water cages, whereas large water cages are singly occupied by tetrahydrofuran. The presence of this second guest component stabilizes the clathrate at pressures of 5 megapascals at 279.6 kelvin, versus 300 megapascals at 280 kelvin for pure H2hydrate.