Study on Preparation of Activated Carbon from Tobacco Stems
Study on Preparation of Activated Carbon from Tobacco Stems
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发表时间：
2007
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通讯作者：
Chi Ji-an
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作者：
Chi Ji-an
Activated carbon was prepared from tobacco stem by steam activation.The results show that activation temperature and S/C ratio are important to the porosity development of the activated carbon.Activated carbon with BET surface area of 522-590 m2/g and iodine adsorption capacity of 840-912 mg/g has been produced under activation temperature 750-800 ℃ and S/C ratio between 1.5-2.0∶1.0.The study confirms that tobacco stems are highly reactive to steam activation,and therefore can be used to produce activated carbon through a single stage activation process in a fluid bed.Mineral matters in tobacco stems were found to be catalytic to steam activation of the precursor,upon which a process of deashing with diluted HCl solution followed by activation to produce activated carbon with relatively lower mineral content has been put forward.
