Patent number 8623784 is assigned to
The following quote was obtained by the news editors from the background information supplied by the inventors: "Fossil fuels supply more than 90% of the world's energy needs. However, the combustion of fossil fuels is one of the major sources of the green house gas carbon dioxide, which is suspected to have a role in global warming. Current carbon dioxide capture technology is very expensive and energy intensive, suffering from inherent regeneration cost and inefficiency due to the possible corrosion in the presence of O.sub.2 and other impurities. Amine based solvents exhibit a high degree of carbon dioxide uptake mainly due to the presence of an amine group. The amine groups chemically interact with carbon dioxide, providing a high adsorption capacity. Some amine based ionic liquids have attracted attention due to their good carbon dioxide uptake capacity, but preparation of such ionic liquids is a tedious process. In addition, these adsorbents suffer because adsorption capacity is limited to approximately room temperature."
In addition to the background information obtained for this patent, NewsRx journalists also obtained the inventors' summary information for this patent: "This disclosure is not limited to the particular systems, devices and methods described, as these may vary. The terminology used in the description is for the purpose of describing the particular versions or embodiments only, and is not intended to limit the scope.
"In an embodiment, nanocomposite materials composed of polyaniline and graphite nanoplatelets are described. The materials can be configured to reversibly adsorb carbon dioxide. In other embodiments, nanocomposite materials composed of an amine-containing polymer and a graphitic material can be configured to reversibly adsorb carbon dioxide.
"In an embodiment, methods of making a nanocomposite adsorbent material including the growth of polyaniline over the surface of oxidized graphite nanoplatelets are described. In other embodiments, methods of making a nanocomposite adsorbent material including the growth of an amine-containing polymer from the surface of an oxidized graphitic material are described.
"In an embodiment, methods of adsorbing carbon dioxide using a nanocomposite adsorbent material composed of polyaniline and graphite nanoplatelets are described. The methods can include contacting the nanocomposite adsorbent material with carbon dioxide or a mixture containing carbon dioxide. In other embodiments, methods of adsorbing carbon dioxide using a nanocomposite adsorbent material composed of an amine-containing polymer and a graphitic material are described. The methods can include contacting the nanocomposite adsorbent material with carbon dioxide or a mixture containing carbon dioxide.
"The graphitic material of some embodiments may be selected from, but is not limited to: graphene, graphite, graphite nanoplatelets, oxidized graphite, fullerenes, carbon nanotubes or any combination thereof. The amine-containing polymer of some embodiments may be selected from, but is not limited to: polyaniline, polypyrrole, poly(allylamine), poly(ethylenimine), or any combination thereof."
URL and more information on this patent, see: Ramaprabhu, Sundara; Mishra,
Keywords for this news article include: Graphite, Minerals, Chemicals, Chemistry, Carbon Dioxide, Inorganic Carbon Compounds,
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