Activated graphitic carbon and metal hybrids thereof
First Claim
1. The structure of an activated graphitic carbon that is comprised of bundles of longitudinally aligned tubes that share common walls and wherein the said wall structures are predominantly comprised of graphitic carbon and contain pores leading to channels within the tube walls.
0 Assignments
0 Petitions
Accused Products
Abstract
A graphitized activated carbon and a method for the preparation thereof is disclosed. The material is comprised of bundles of aligned tubes that share a common wall and range from 10 to 500 micrometeres in length. Individual particle diameters range from 5 to 150 micrometers, and individual tube diameters are 1 to 10 micrometers. The shared walls are no thicker than 3 micrometers, and preferably less than 1 micrometer thick. Embedded within said walls are pores and channels of a diameter in a range of less than 1 to 50 nanometers, preferably less than 5 nanometers. When the carbonaceous particles are combined with metallic species including oxides, alloys, and/or multi-metal combinations, the hybrid material is useful for reversible storage of gas, including hydrogen, and do not require reaction of the metal components with hydrogen prior to combination with the carbon component.
-
Citations
20 Claims
- 1. The structure of an activated graphitic carbon that is comprised of bundles of longitudinally aligned tubes that share common walls and wherein the said wall structures are predominantly comprised of graphitic carbon and contain pores leading to channels within the tube walls.
-
15. A process to remove amorphous carbon from highly structured and nanostructured graphitic carbon materials without removing metals that are associated with the graphitic carbon by placing the unpurified carbon into a standard mixing device with a neutral solution of potassium permanganate and stirring over mild heat or using a known reflux apparatus to treat the material until the desired purity is attained.
-
19. A process wherein a given sorbent material is packaged into a thin, lightweight container, such as a polymer or metal vessel or bag, that is permeable to the desired sorbent gas and has a conformation so as to promote heat transfer to and from the sorbent material, and to facilitate ready removal of the sorbent material from the adsorption/desorption apparatus.
Specification