| 摘要 |
<p>In the method for manufacturing activated carbon from cellulosic material, the material is treated with a phosphoric compound like an ammonium phosphate compound which forms an ester with cellulose. The material is pyrolysed and activated in a suitable atmosphere and using a suitable temperature-time program. Activation is performed in a carbon dioxide atmosphere by a reduction reaction of carbon dioxide as the carbon dioxide gas flows past the material under treatment. As the cellulosic material, regenerated cellulose fibre like viscose fibre is used. Activation stage is continued at over 850 °C until yield of about 14-25 % is obtained whereby BET values of 1000-1600 m2/g are reached.</p> |
