机械力化学技术制备磷酸法活性炭及其碘吸附性能的研究  

Preparation on Activated Carbon with Phosphoric Acid Method by Mechanochemical Process and Evaluation of Its Iodine Adsorption Value

作　　者：李素琼[1,2] 黄彪[1] 林冠烽[3] 陈翠霞[1] 黄锦峰[1] 

机构地区：[1]福建农林大学材料工程学院,福建福州350002 [2]武夷学院环境与建筑工程系,福建武夷山354300 [3]福建省林业科学研究院,福建福州350012

出　　处：《武夷学院学报》2011年第5期29-35,共7页Journal of Wuyi University

基　　金：国家自然科学基金(30972312;30771682);福建省科技计划重点项目(2009H0004)

摘　　要：研究采用机械力化学技术制备了吸附性能良好的活性炭。试验采用Plackett-Burman(PB)实验设计和Box-Behnken Design(BBD)设计法对影响活性炭碘吸附值的6个条件进行筛选优化。PB实验设计与统计学分析表明酸屑比、研磨时间、活化温度、磷酸浓度是影响活性炭碘吸附值的四个关键因素。以碘吸附值为响应目标,对四因素进行BBD设计,并经响应面法优化分析得到影响活性炭碘吸附值的二阶模型,确定了机械力化学技术制备磷酸活性炭的较优操作条件为:酸屑比2.00,研磨时间22min,活化温度406℃,磷酸浓度20%,活性炭的碘吸附值达1195.23mg/g。In this study, activated carbon of good adsorption properties is prepared by mechanical-chemical method. Plaekett-Burman （PB） design and Box-Behnken Design （BBD） were applied to screening and optimizing 6 factors for influence of the iodine adsorption value of activated carbon. Four key factors, acid ratio, grinding time, activation temperature and phosphate concentration,were found to significantly influence the iodine adsorption value of activated carbon via PB design and the following statistic analysis. By BBD design and response surface analysis, the quadratic model for four significant factors was established with the iodine adsorption value as the target response. The optimal preparation conditions are, the acid ratio 2.00, grinding time 22min, activation temperature 406 ℃, 20% concentration of phosphoric acid. The iodine value of activated carbon prepared by the optimal conditions is 1195.23mg / g.

关 键 词：机械力化学法 活性炭 磷酸 碘吸附值 响应面分析 

分 类 号：TQ424.1[化学工程]