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林产化学与工业

林产化学与工业 ›› 2013, Vol. 33 ›› Issue (4): 43-47.doi: 10.3969/j.issn.0253-2417.2013.04.008

• 1研究报告 • 上一篇    下一篇

磷酸活化稻秆制备中孔活性炭的研究

卢辛成, 蒋剑春, 孙康, 谢新苹, 王金表   

  1. 中国林业科学研究院林产化学工业研究所; 生物质化学利用国家工程实验室; 国家林业局林产化学工程重点开放性实验室; 江苏省生物质能源与材料重点实验室, 江苏 南京 210042
  • 收稿日期:2013-01-05 修回日期:1900-01-01 出版日期:2013-08-30 发布日期:2013-08-30
  • 通讯作者: 蒋剑春(1955- ),男,研究员,博士,博士生导师,主要从事生物质能源和炭材料的研究开发工作;E-mail:bio-energy@163.com。

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   

  1. 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

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摘要： 以稻秆为原料,通过磷酸法活化制备得到了中孔活性炭,并采用氮气吸附、元素分析和扫描电镜对其进行了表征分析。实验结果表明:稻秆制备活性炭的工艺条件为10g稻秆,浸渍比3:1(质量比),在140℃下预活化60min,活化温度450℃,活化时间60min。在此条件下制备得到的活性炭得率为25%,亚甲基蓝吸附值215mg/g,碘吸附值835mg/g,A法焦糖值110%,灰分3.03%,其比表面积为967.7m2/g,总孔容为1.12cm3/g,平均孔径为4.6nm,中孔率可以达到84.8%。

关键词: 稻秆, 中孔活性炭, 制备, 化学法, 表征

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

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