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bce ›› 2016, Vol. 50 ›› Issue (2): 34-38.

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Structure and Properties of Caragana korshinskii Kom. Activated Carbon

XING Ze-bing1, SUN Feng-kun1, GUO Yu-ming1, FAN Hua2, LIU Chun-ling2   

  1. 1. School of Engineering, Shanxi Agriculture University, Taigu 030801, China;
    2. The Centre of Experimental Education, Shanxi Agriculture University, Taigu 030801, China
  • Received:2015-09-30 Online:2016-03-30 Published:2016-03-31

Abstract: Activated carbon was made by pyrolysis of Caragana korshinskii Kom.(caragana) at 350 and 600℃ and activated by water vapor at 800℃ for 1 h. The mechanism of pyrolysis, functional group and structure of C.korshinskii carbon were analyzed by TGA and FT-IR. The pore structure of C.korshinskii activated carbon was analyzed by SEM and specific surface area analyzer. The adsorptive property was measured by iodine sorption. As a result, in the course of charring, hemicellulose, cellulose and lignin were cracked in the wide temperature range of 150-680℃ to obtain the biomass carbon. The principle of charring was to form aromatic compound by breaking the long chain alcoholic hydroxyl group and hydroxy group.C.korshinskii activated carbon obtained by carbonization at 600℃ and activation with water vapor at 800℃ kept the structure of fibrous tissue and had anundant pore structure with pore size less than 5 nm mostly. Its specific surface area was 187 m2/g, and iodine sorption value could be up to 221 mg/g. It was seen that C.korshinskii could be acted as a kind of excellent material for making activated carbon.

Key words: Caragana korshinskii Kom., biomass, carbonization, structure, properties

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