Highly microporous carbon
AssigneeWestvaco Corporation
InventorFrederick S. Baker
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Abstract
A highly microporous activated carbon is disclosed which is prepared by activation of an active carbon precursor material with a potassium hydroxide solution, pre-drying the blend to below 25% moisture content, activating this blend at from about 650.degree. to about 1100.degree. C., and acid washing and drying the microporous activated carbon product and which is characterized by greater than 50% of its total pore volume comprising pores of from above 8 .ANG. to 20 .ANG. in width and greater than 70% of its total pore volume comprising pores of less than 20 .ANG. in width and greater than 95% of its total pore volume comprising pores of less than 50 .ANG. in width.
Claims5
A microporous activated carbon comprising an amount greater than 50% total pore volume of pores in the range of greater than 8 .ANG. up to 20 .ANG. in width and an amount greater than 95% of the total pore volume of pores up to 50 .ANG. in width, wherein the carbon is derived from lignocellulose material.
Dependencies are inferred from the claim text.