| abstract |
Provided are high surface area porous carbon materials having large intermediate and microporous surfaces that enhance adsorption and gas storage capacity, preferably derived from biomass, and methods for their production. Activated carbon comprising greater than about 50 wt% biomass-derived carbon and a DFT surface area greater than about 1500 m2 / g. The activated carbon also has a pore volume greater than about 0.6 cc / g of pores having a diameter in the range of about 10-50 mm, and about 0.4 cc / g of pores having a diameter in the range of about 10-20 mm. The pore volume greater than g and at least about 20% of the pore volume includes a pore distribution such that the pores contain pores having a diameter in the range of about 20-50 inches. The activated carbon material is produced by a first carbonization step for producing desirable initial micropores and intermediate pore volumes, and a second step for producing a high surface area while maintaining a useful distribution of intermediate pores and micropore volumes. And are included. [Selection figure] None |