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Effects of Heat Pretreatment During Impregnation on the Preparation of Activated Carbon from Chinese Fir Wood by Phosphoric Acid Activation

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Abstract

Activated carbons were prepared from Chinese fir wood by phosphoric acid activation. The effects of heat pretreatment from 80 to 180 °C during impregnation on the properties of fir wood and its activated carbons were discussed. The crystallinity index and surface chemistry of the pretreated fir wood were characterized by X-ray diffraction and Fourier transform infrared spectroscopy (FT-IR). The porous texture of activated carbons was investigated by N2 adsorption–desorption isotherms. The results showed that with increasing pretreatment temperature, the crystallinity of the pretreated samples decreased, which gave rise to a significant development of pores, especially micropores as high as 97.2 %. FT-IR results revealed that the carbonyl-containing and phosphorus-containing groups of the pretreated samples increased with increasing pretreatment temperature. For a temperature of 140 °C, the specific surface area, the total pore volume, and the micropore volume reached a maximum of 1603.0 m2/g, 0.792 cm3/g, and 0.770 cm3/g, respectively. However, a higher pretreatment temperature was not beneficial for activation. Thus, heat pretreatment during impregnation can be regarded as an excellent method for manufacturing phosphoric acid-activated carbon with a high micropore volume.

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Acknowledgments

We are grateful for the financial support of “Eleventh Five-Year” National Key Technology Program (grant no. 2009BADB1B03) and Research Institutes of Public Service Special Operation Foundation of Fujian Province (grant no. 2011R1013-5).

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Authors and Affiliations

  1. Institute of Chemical Industry of Forest Products, CAF, Jiangsu Province, Nanjing, 210042, China

    Guanfeng Lin, Jianchun Jiang & Kang Sun

  2. National Engineering Laboratory for Biomass Chemical Utilization, Jiangsu Province, Nanjing, 210042, China

    Guanfeng Lin, Jianchun Jiang & Kang Sun

  3. Key and Open Laboratory on Forest Chemical Engineering, SFA, Jiangsu Province, Nanjing, 210042, China

    Guanfeng Lin, Jianchun Jiang & Kang Sun

  4. Key Laboratory of Biomass Energy and Material, Jiangsu Province, Nanjing, 210042, China

    Guanfeng Lin, Jianchun Jiang & Kang Sun

  5. Fujian Academy of Forestry Science, Fuzhou, 350012, China

    Guanfeng Lin & Kaijin Wu

  6. Fujian Provincial Key Laboratory of Forest Silviculture and Forest Product Processing Utilization, Fuzhou, 350012, China

    Guanfeng Lin & Kaijin Wu

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  1. Guanfeng Lin
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  2. Jianchun Jiang
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  3. Kaijin Wu
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  4. Kang Sun
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Correspondence to Jianchun Jiang.

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Lin, G., Jiang, J., Wu, K. et al. Effects of Heat Pretreatment During Impregnation on the Preparation of Activated Carbon from Chinese Fir Wood by Phosphoric Acid Activation. Bioenerg. Res. 6, 1237–1242 (2013). https://doi.org/10.1007/s12155-013-9324-5

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  • DOI: https://doi.org/10.1007/s12155-013-9324-5

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