林产化学与工业2011，Vol.31Issue(5)：81-84,4.
磷酸活化草浆黑液木质素制备活性炭的研究
Preparation of Activated Carbon from Straw Black Liquor Lignin Impregnated by Phosphoric Acid
闫伟 1张艳 1杨建华 1鲁金明 1王金渠1
作者信息
- 1. 大连理工大学化工与环境生命学部化工学院,辽宁大连116024
- 折叠
摘要
Abstract
Activated carbon was prepared from straw black liquor lignin using phosphoric add as aclivation agenl. The function of phosphoric acid in activation process was discussed, and effects of reaction conditions such as ratio of activation reagent to maleri-al, the temperature and the activation time were investigated. The results showed (hat the lignin of straw black liquor was a good material for preparing activated carbon. Phosphoric acid acts as both [he dehydrating agent and the protective agent during the activation process. The optimum conditions are as follows;activation reagent lo material ratio 2. 5 , activation temperature 450 % , and activation lime 60-70 min. Under these conditions, the BET surface of the carbon is up to 1772 m2/g, and the adsorption isotherm is between the type I and type II with adsorption capacity of n-butane 485 mg/g.关键词
黑液/草浆木质素/磷酸/活性炭Key words
black liquor/straw lignin/phosphoric acid/activated carbon分类
化学化工引用本文复制引用
闫伟,张艳,杨建华,鲁金明,王金渠..磷酸活化草浆黑液木质素制备活性炭的研究[J].林产化学与工业,2011,31(5):81-84,4.
