Abstract:
A high surface area, porous active carbon matrix containing a substantially uniform dispersion of a metal or metal-containing material and methods for making and using the same are disclosed.
Abstract:
The invention relates to a process for reducing the level of radioactivity of a stream of light hydrocarbons by passing the stream through sulfided solid particles.
Abstract:
A composition generally includes carbon particles. The particles are prepared by dissolving a carbohydrate-based precursor in water to form a precursor solution and placing the precursor solution in a pressure vessel. The precursor solution is placed in a pressure vessel. The pressure vessel is heated to a reaction temperature to form carbon particles. The carbon particles are subjected to a chemical activation and a physical activation. The composition includes, by weight, about 5% to about 30% oxygen.
Abstract:
A method of preparing a silver loaded activated carbon fiber includes the following steps. A viscose fiber is treated with a hydroxyalkyl cyclodextrin aqueous solution to obtain a hydroxyalkyl cyclodextrin loaded viscose fiber. The hydroxyalkyl cyclodextrin loaded viscose fiber is then treated with a silver salt aqueous solution to obtain a hydroxyalkyl cyclodextrin and silver salt loaded viscose fiber. The hydroxyalkylated cyclodextrin and silver salt loaded viscose fiber is heated in deionized water at 80 to 100° C. to obtain a silver loaded viscose fiber. The silver loaded viscose fiber is treated with a disodium hydrogen phosphate aqueous solution and then heated under nitrogen at 400 to 600° C. to obtain a silver loaded carbon fiber. The silver loaded carbon fiber is heated under nitrogen and water vapor at 900 to 1,200° C. to obtain the silver loaded activated carbon fiber.
Abstract:
A composition generally includes carbon particles. The particles are prepared by dissolving a carbohydrate-based precursor in water to form a precursor solution and placing the precursor solution in a pressure vessel. The precursor solution is placed in a pressure vessel. The pressure vessel is heated to a reaction temperature to form carbon particles. The carbon particles are subjected to a chemical activation and a physical activation. The composition includes, by weight, about 5% to about 30% oxygen.
Abstract:
Carbonaceous material is activated to produce a high activity, high density gas-phase activated carbon under conditions which effectively alter the particle pore size distribution to optimize the carbon's mesoporosity. The carbon is particularly suited for application in emission control for vehicles.
Abstract:
A chemically activated shaped carbon suitable for adsorbing and desorbing hydrophobic organic compounds and having the specific properties in bulk density, pore volume, bulk density x pore volume, surface area, bulk density x surface area, mean pore size and the effective amount of adsorption of butane, a process for producing thereof and use thereof.
Abstract:
A filter material by which substances contained in gaseous or liquid media can be removed comprises a product in the form of a matrix of activated carbon. The product has uniformly dispersed therein at least one metal taken from the group Ca, Mg, Ba, Al, Cu, and the transition metals and is obtained by chemically reacting cations which comprise at least one of said metals from said group with anionic groups chemically bound to a polyhexose derivative.
Abstract:
High quality activated carbon is produced by charging a mixture of an organic material such as wood, anthracite coal, brown coal, coconut husk, and a material containing metal oxide, metal carbonate or metal hydroxide, such as iron ore and lime, into an internal heating rotary furnace, preferably, having an internal space with a length of 1 to 10 times the diameter thereof, through an end of the rotary furnace, blowing air or oxygen gas into the internal space through an opposite end thereof, burning the distilled gas from the organic material and carbon monoxide generated by the reaction of the organic material with the metal oxide, carbonate or hydroxide, and uniformly circulating the burnt gas in the internal space to maintain the internal space at the reduction temperature.
Abstract:
The present invention provides activated carbon with which hydrophilicity is excellent and the amount of steam adsorbed is increased, and provides a method for producing this activated carbon. This activated carbon is characterized in that the amount of basic functional groups in the activated carbon is 0.470 meq/m2 or greater. Preferably the amount of basic groups per specific surface area of activated carbon is 0.200 μeq/m2 or greater and the ratio of the amount of basic functional groups and the amount of acidic functional groups (basic functional groups/acidic functional groups) is 1.00 or greater. This method for producing activated carbon is characterized in comprising a step for imparting basic functional groups by bringing the activated carbon into contact with a basic substance. According to a preferred embodiment, the method comprises a step for heating the resulting activated carbon in an insert atmosphere.