PRODUCTION OF METAL-CONTAINING ACTIVATED CARBON

摘要

PURPOSE:To enable selective adsorption of medium-sized molecule and large- sized molecule by mixing a pitch having low softening point with a metallic compound and subjecting the obtained calcination raw material having low softening point to carbonization treatment and activation treatment. CONSTITUTION:A low-softening pitch having a softening point of 60-150 deg.C is mixed with 0.1-10wt.% of a metal component such as t-butylmagnesium chloride. The mixture is dissolved in benzene, etc., and the solvent is distilled off to obtain a homogeneous mixture. A calcination raw material having low softening point is produced by melting the mixture at 200-300 deg.C in an inert gas atmosphere. The obtained calcination raw material is carbonized by increasing the temperature from 200 deg.C to 900 deg.C at a heating rate of 10 deg.C/min in nitrogen atmosphere. The carbonized product is activated at 900 deg.C for about 30min in a steam- saturated nitrogen gas flow supplied at a rate of 3L/min to obtain a metal- containing activated carbon having a mesopore ratio of 10-99% in an activation yield of >=20%.