Carnegie Institution of Washington

Wendy L Mao

Ho-Kwang Mao

A novel molecular alloy of Oand Hand a method of producing such a molecular alloy are provided. When subjected to high pressure and extensive x-radiation, HO molecules cleaved, forming O&#x2014;O and H&#x2014;H bonds. In the method of the present invention, the O and H framework in ice VII was converted into a molecular alloy of Oand H. X-ray diffraction, x-ray Raman scattering, and optical Raman spectroscopy demonstrate that this crystalline solid differs from previously known phases.

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The invention relates to a method of storing hydrogen that employs a mixture of hydrogen and a hydrocarbon that can both be used as fuel. In one embodiment, the method involves maintaining a mixture including hydrogen and a hydrocarbon in the solid state at ambient pressure and a temperature in excess of about 10 K.

Mixture including hydrogen and hydrocarbon having pressure-temperature stability

A method for hydrogen storage includes providing water and hydrogen gas to a containment volume, reducing the temperature of the water and hydrogen gas to form a hydrogen clathrate at a first cryogenic temperature and a first pressure and maintaining the hydrogen clathrate at second cryogenic temperature within a temperature range of up to 250 K to effect hydrogen storage. The low-pressure hydrogen hydrate includes H O molecules, H molecules and a unit cell including polyhedron cages of hydrogen-bonded frameworks of the H O molecules built around the H molecules.

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Wendy L Mao