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A process is provided for the transport and storage of hydrogen by reversible sorption and containment within carbon-metal hybrid materials. The process comprises contacting a carbon-metal hybrid composition with a hydrogen-containing gas at conditions of temperature and pressure whereby the carbon-

A process is provided for the transport and storage of hydrogen by reversible sorption and containment within carbon-metal hybrid materials. The process comprises contacting a carbon-metal hybrid composition with a hydrogen-containing gas at conditions of temperature and pressure whereby the carbon-metal hybrid composition sorbs the hydrogen gas. The hydrogen that is sorbed in the carbon-metal composition is subsequently released by lowering the H2pressure and/or increasing the temperature to levels which cause desorption of the hydrogen gas.

대표청구항 ▼

A process is provided for the transport and storage of hydrogen by reversible sorption and containment within carbon-metal hybrid materials. The process comprises contacting a carbon-metal hybrid composition with a hydrogen-containing gas at conditions of temperature and pressure whereby the carbon-

A process is provided for the transport and storage of hydrogen by reversible sorption and containment within carbon-metal hybrid materials. The process comprises contacting a carbon-metal hybrid composition with a hydrogen-containing gas at conditions of temperature and pressure whereby the carbon-metal hybrid composition sorbs the hydrogen gas. The hydrogen that is sorbed in the carbon-metal composition is subsequently released by lowering the H2pressure and/or increasing the temperature to levels which cause desorption of the hydrogen gas. rare earth metal, and w, x, y, and z, each range from between 0 and 3, wherein the outermost coating layer has concentration of oxygen that is higher by a factor of at least about 2 than the layer in direct contact with the abrasive particle. 11. The method of claim 10, wherein said layers are formed by one or more of chemical vapor deposition (CVD) or pack cementation, wherein oxygen concentration is increased during the formation of the outermost layer. 12. The method of claim 10, wherein the outermost coating layer has concentration of oxygen that is higher by a factor of at least about 5 than the layer in direct contact with the abrasive particle. 13. The method of claim 10, wherein w is 0 for the coating layer in contact with said abrasive particle. 14. The method of claim 10, wherein said abrasive particle is one or more of diamond, cubic boron nitride (CBN), or a silicon carbide. 15. The method of claim 14, wherein said abrasive particle ranges in size from between about 1 micron and 10 mm. 16. The method of claim 14, wherein said abrasive particle is diamond, which ranges in size from between about 37 and 425 microns.