| KOH活化杨木制备活性炭的特性研究 |
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| 引用本文： | 李润霞,李占勇,董鹏飞,叶京生.KOH活化杨木制备活性炭的特性研究[J].天津科技大学学报,2011(4):44-47,56. |
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| 作者姓名： | 李润霞 李占勇 董鹏飞 叶京生 |
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| 作者单位： | 天津科技大学机械工程学院; |
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| 摘 要： | 通过热重法对杨木颗粒以及用KOH浸渍后的杨木颗粒进行热解实验,通过TG、DTG、DSC曲线的变化规律,分析在主要失重阶段发生的物理变化、化学变化以及炭得率.结果表明:活化剂KOH中的K+对木材的热解具有催化作用,形成活性炭的温度基本为600,℃,温度高于800,℃时,活性炭发生烧失反应;升温速率对炭得率几乎没有影响;加入活化剂KOH后,提高了炭得率,但是炭得率与活化剂/杨木颗粒的质量比值成反比.
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| 关 键 词： | 杨木 化学活化 热重法 活性炭 炭得率 |
Characteristic Study on Preparation of Activated Carbon from Poplar Wood by KOH Chemical Activation |
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| LI Run-xia,LI Zhan-yong,DONG Peng-fei,YE Jing-sheng.Characteristic Study on Preparation of Activated Carbon from Poplar Wood by KOH Chemical Activation[J].Journal of Tianjin University of Science & Technology,2011(4):44-47,56. |
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| Authors: | LI Run-xia LI Zhan-yong DONG Peng-fei YE Jing-sheng |
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| Institution: | LI Run-xia,LI Zhan-yong,DONG Peng-fei,YE Jing-sheng(College of Mechanical Engineering,Tianjin University of Science & Technology,Tianjin 300222,China) |
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| Abstract: | The pyrolysis experiments were carried out with the poplar wood and the poplar wood impregnated by KOH through the thermogravimetric analysis.The obtained TG/DTG/DSC curves were investigated,and the chemical and physical changes in major degradation stages as well as activated carbon yield were analyzed.The results showed that the K+ in acti-vated agent KOH had catalytic effect on wood pyrolysis.Activated carbon was generally produced at 600,℃.The activated carbon was reacted and lost when the temperature higher than 800,℃.The heating rate has little effect on the carbon yield,which was improved by KOH,but the yield was inversely proportional to the mass ratio of KOH and poplar wood particles. |
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| Keywords: | poplar wood chemical activation thermogravimetry activated carbon carbon yield |
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