ACTIVATED CARBON WITH HIGH PERCENTAGE MESOPOROSITY, SURFACE AREA, AND TOTAL PORE VOLUME

摘要

A method of producing high grade activated carbon is introduced. The method entails providing soft wood biomass material pretreated to result in a mass of fermentation residual solids having a desired content of lignin. The material is pyrolyzed/carbonized in an inert environment at a temperature rate of 10° C./min up to an upper temperature range and held at the upper temperature range for up to one hour to produce char. Thereafter, the char is activated by changing the inert environment after about one hour at the upper temperature range to an oxidizing environment at a desired oxidizing gas flow rate for a predetermined time period. The environment is then switched back to an inert environment and allowed to cool until room temperature is reached so as to produce the activated high grade carbon. Applications for the material include but is not limited to: carbon electrodes in supercapacitors and mercury adsorbent material.

主权项

1. A method of producing high grade activated carbon, comprising:
providing soft woody biomass material; pretreating the soft wood biomass material, wherein the pretreated soft wood biomass material results in a mass of fermentation residual solids having a desired content of lignin; pyrolysing/carbonizing the fermentation residual solids in an inert environment at a temperature rate of 10° C./min up to about 700° C. and held at the upper temperature range for up to one hour to produce a char;activating the char by changing the inert environment after one hour at 700° C. to an oxidizing environment at a desired oxidizing gas flow rate for a time period of about 5 minutes up to about 120 minutes;switching back to an inert environment and allowing the environment to cool until room temperature is reached; andremoving the produced activated high grade activated carbon.