Effects of Air-Phosphoric Acid Activation on Pore Structure and Adsorption Property of Mesoporous Carbon from Hemp Stem

Jin Ju Sun; Jian Min Gao; Xin Min Hao; Xin Yu Cui; Tian Ma; Yuan Yang

doi:10.4028/www.scientific.net/AMR.821-822.41

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 821-822Effects of Air-Phosphoric Acid Activation on Pore...

Effects of Air-Phosphoric Acid Activation on Pore Structure and Adsorption Property of Mesoporous Carbon from Hemp Stem

Abstract:

Mesopore activated carbons were prepared using hemp stem as feedstock by air-phosphoric acid activation method. The crystallite size of hemp stem-based mesoporous carbon is small, and its pores is larger. The phosphoric acid solution concentration has a signification effect on pore structure and adsorption property of mesopore activated carbons from hemp stem. The mesopore activated carbon attained at phosphoric acid solution concentration of 50% exhibits a maximum BET(Brunauer Emmett and Teller) specific surface area of 1351m²/g, total pore volume of 1.21 cm³/ g, mesopore pore volume of 0.90 cm³/ g and a mesopore fraction of 74.4%. And the resulting carbon has smaller crystal size, developed pore structure, wider pore size distribution.

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Periodical:

Advanced Materials Research (Volumes 821-822)

Pages:

41-46

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.821-822.41

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Online since:

September 2013

Authors:

Jin Ju Sun*, Jian Min Gao, Xin Min Hao, Xin Yu Cui, Tian Ma, Yuan Yang

Keywords:

Adsorption Property, Air-Phosphoric Acid Activation, Hemp Stem, Mesopore Activated Carbon, Pore Structure

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* - Corresponding Author

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