摘要
采用氯化锌活化法在不同操作条件下制备木质活性炭产品，通过实验测定相应的活性炭得率及活性炭的碘值、亚甲基蓝吸附值和苯酚吸附值．分析研究了氯化锌活化法制备活性炭工艺过程中各种操作参数如浸渍比、活化时间和活化温度对活性炭的得率、活性炭碘值、亚甲基蓝吸附值和苯酚吸附值的影响．实验结果表明，浸渍比是氯化锌活化法制备活性炭的最重要的影响因素．综合考虑活性炭的得率和吸附性能受活化操作参数的影响规律，探讨了氯化锌活化法制备木质活性炭的最优操作参数．在实验范围内，选择氯化锌活化法制备木质活性炭的浸渍比100％，活化温度500℃左右和活化时间60～90min比较适宜。
Activated carbons were prepared from sawdust by chemical activation with zinc chloride under different operation conditions. The effects of operation parameters such as impregnation ratio, activation temperature and time on the adsorption properties of activated carbons were measured and analyzed in order to optimize these operation conditions. The experimental results show that both the yield and the adsorption for iodine, methylene blue and phenol of activated carbon can reach a relatively higher value in the chemical activation process under the experimental conditions that the carbon is activated for 60 - 90 minutes, with the impregna tion ratio of 100% at the activation temperature of 500℃ which are the optimum activation conditions in making wood activated carbon. The most important operation parameter in chemical activation with zinc chloride is the impregnation ratio.
出处
《材料科学与工艺》
EI
CAS
CSCD
北大核心
2006年第1期42-45,共4页
Materials Science and Technology
关键词
活性炭
活化
炭化
吸附
氯化锌
activated carbon
activation
carbonization
adsorption
zinc chloride
