磷酸活化稻秆制备中孔活性炭的研究

doi:10.3969/j.issn.0253-2417.2013.04.008

›› 2013, Vol. 33 ›› Issue (4): 43-47.doi: 10.3969/j.issn.0253-2417.2013.04.008

• 1研究报告 • Previous Articles Next Articles

Preparation of Mesoporous Activated Carbon from Rice Straw Using Phosphoric Acid

LU Xin-cheng, JIANG Jian-chun, SUN Kang, XIE Xin-ping, WANG Jin-biao

Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab.for Biomass Chemical Utilization; Key and Open Lab. of Forest Chemical Engineering, SFA; Key Lab.of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China

Received:2013-01-05 Revised:1900-01-01 Online:2013-08-30 Published:2013-08-30

Abstract

Abstract: Mesoporous activated carbon was prepared from rice straw by chemical activation with phosphoric acid and characterized by N₂ adsorption, elemental analysis and scanning electron micrograph. The results showed that activated carbon was pre-activated at 140℃ for about 60 min and then prepared at the impregnated ratio 3:1(mass ratio), activation temperature 450℃, activation duration 60 min. Under this condition, characteristics of activated carbon are: the yeild 25%, methylene blue adsorption value 215 mg/g, iodine adsorption values 835 mg/g, decolorization of caramel (A) 110%, ash content 3.03%, pecific surface area 967.7 m²/g, total volume 1.12 cm³/g, average pore diameter 4.6 nm. The ration of mesopores of activated carbon made from rice straw is 84.8%. Rice straw can be used as the material to prepare activated carbon with mesopores.

Key words: rice straw, mesoporous activated carbon, preparation, chemical activation, characterization

CLC Number:

TQ35
TQ424

LU Xin-cheng;JIANG Jian-chun;SUN Kang;XIE Xin-ping;WANG Jin-biao. Preparation of Mesoporous Activated Carbon from Rice Straw Using Phosphoric Acid[J]. , 2013, 33(4): 43-47.

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Preparation of Mesoporous Activated Carbon from Rice Straw Using Phosphoric Acid

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