Carbon particulates with controlled density
AssigneeAmerican Cyanamid Company
InventorsJoseph Lawrence Schmitt, Jr., Philip Leroy Walker, Jr., George Augustus Castellion
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Abstract
Carbon particulates comprising carbon black spheres and a carbon binder having large pores as well as desirable pore size distributions are disclosed which are useful as selective adsorbants. A method of preparation and various uses are also disclosed.
Claims17
A porous carbon particulate comprising carbon black spheres bonded in molded relationship by a carbonized binder, said spheres having an average diameter in the range of about 80 to 5000 angstrom units and a surface area of at least 100 square meters per gram, and said particulate having a pore volume of at least 0.2 cubic centimeters per gram, a surface area of at least 100 square meters per gram, said particulate surface area being equal to or less than the surface area of said spheres, and a pore size distribution such that at least about 45% of its total surface area is in pores of radius equal to or greater than 20 angstrom units.
Dependencies are inferred from the claim text.