Patent ID: 6362127
Filing Date: 2002-03-26
Classification: B01J

Abstract:
A method for synthesizing a carbon-based catalyst from a carbon-containing sludge raw material, said method comprising the steps of:drying, crushing and sieving a carbon-containing sludge to form a dried sludge material; chemically activating the dried sludge material with at least one metal-based activating agent to form a chemically-activated sludge material; drying and crushing the chemically-activated sludge material to form a dry crushed chemically-activated material; exposing the dry crushed chemically-activated material to light in an environment having a relative humidity of at least 50 percent to form a light-treated chemically-activated material; pyrolyzing the light-treated chemically-activated material at an elevated temperature effective to form a pyrolyzed material of increased microporosity, as compared to the light-treated chemically-activated material prior to pyrolysis; and cooling, crushing, rinsing and drying the pyrolyzed material to form the carbon-based catalyst.