Methods for forming a carbon molecular sieve includes loading polymer fibers into a mold and heating the mold containing the polymer fibers to a temperature in a range from 50 ° C. to 350 ° C. to form a polymer monolith. The polymer monolith is then pyrolized by heating to a temperature in a range from 500 ° C. to 1700 ° C. A carbon molecular sieve monolith includes a first end and a second end opposite the first end, and carbon molecular sieve fibers aligned in parallel from the first end of the carbon molecular sieve monolith to the second end of the carbon molecular sieve monolith. Channels extend from the first end of the carbon molecular sieve monolith to the second end of the carbon molecular sieve monolith, and outer surfaces of the carbon molecular sieve fibers are joined. The carbon molecular sieve monolith has a cell density of greater than 500 cells per square inch.

Provided are a method of purifying an alpha-olefin and a composition for purifying an alpha-olefin therefor. More specifically, a method of purifying an alpha-olefin having an excellent effect of removing impurities in the alpha-olefin and a composition for purifying an alpha-olefin therefor are provided.

A method for extracting a low-molecular-weight substance existing in a biological sample, including: 1) an adsorption step of adsorbing the substance on porous carbon by mixing the biological sample with the porous carbon having mesopores of 3.5 nm to 150 nm and micropores of a larger size as a hierarchical structure, and recovering the porous carbon from the obtained mixture, or by bringing the biological sample into contact with a filtration filter on which the porous carbon is disposed or supported; and 2) a releasing step of releasing the low-molecular-weight substance from the porous carbon by mixing the porous carbon obtained after the adsorption step with an aqueous solution containing 0.1 mass % to 1 mass % of spherical silica having an average particle diameter of 10 nm to 100 nm and containing 10% to 12% of acetonitrile, or by causing the filtration filter to contact and pass through the aqueous solution.

A method for extracting a low-molecular-weight substance existing in a biological sample, including: 1) an adsorption step of adsorbing the substance on porous carbon by mixing the biological sample with the porous carbon having mesopores of 3.5 nm to 150 nm and micropores of a larger size as a hierarchical structure, and recovering the porous carbon from the obtained mixture, or by bringing the biological sample into contact with a filtration filter on which the porous carbon is disposed or supported; and 2) a releasing step of releasing the low-molecular-weight substance from the porous carbon by mixing the porous carbon obtained after the adsorption step with an aqueous solution containing 0.1 mass % to 1 mass % of spherical silica having an average particle diameter of 10 nm to 100 nm and containing 10% to 12% of acetonitrile, or by causing the filtration filter to contact and pass through the aqueous solution.

The present invention relates to novel sulfur-doped carbonaceous porous materials. The present invention also relates to processes for the preparation of these materials and to the use of these materials in applications such as gas adsorption, mercury and gold capture, gas storage and as catalysts or catalyst supports.

The present invention relates to novel sulfur-doped carbonaceous porous materials. The present invention also relates to processes for the preparation of these materials and to the use of these materials in applications such as gas adsorption, mercury and gold capture, gas storage and as catalysts or catalyst supports.

A method of removing carbon dioxide from a gas can include providing a gaseous feed stream including a carbon dioxide gas and adsorbing the carbon dioxide gas with a porous carbon sorbent. The method can further include de-adsorbing the carbon dioxide and combining the carbon dioxide with a substantially pure hydrogen gas to produce at least one of methane and methanol. The adsorbing and de-adsorbing of the carbon dioxide gas can be conducted by an electric swing adsorption.

A method of removing carbon dioxide from a gas can include providing a gaseous feed stream including a carbon dioxide gas and adsorbing the carbon dioxide gas with a porous carbon sorbent. The method can further include de-adsorbing the carbon dioxide and combining the carbon dioxide with a substantially pure hydrogen gas to produce at least one of methane and methanol. The adsorbing and de-adsorbing of the carbon dioxide gas can be conducted by an electric swing adsorption.

The invention relates to a method to produce a particulate activated carbon material for capturing CO.sub.2 from air, wherein the particulate activated carbon is impregnated with alkali carbonate salt such as K.sub.2CO.sub.3; and wherein the impregnated particulate activated carbon either has, determined using nitrogen adsorption methods, a pore volume of at least 0.10 cm.sup.3/g for pore sizes of at least 5 nm and a pore volume of at most 0.30 cm.sup.3/g for pore sizes of less than 2 nm or is based on a mixture of different alkali carbonate salts, or has a particular pore surface for pore sizes in the range of 2 nm-50 nm.

The invention relates to a method to produce a particulate activated carbon material for capturing CO.sub.2 from air, wherein the particulate activated carbon is impregnated with alkali carbonate salt such as K.sub.2CO.sub.3; and wherein the impregnated particulate activated carbon either has, determined using nitrogen adsorption methods, a pore volume of at least 0.10 cm.sup.3/g for pore sizes of at least 5 nm and a pore volume of at most 0.30 cm.sup.3/g for pore sizes of less than 2 nm or is based on a mixture of different alkali carbonate salts, or has a particular pore surface for pore sizes in the range of 2 nm-50 nm.