响应面法优化制备巨菌草基高比表面积活性炭  

Optimal preparation of Pennisetum sinese -based activated carbon withhigh specific surface area by response surface methodology

作　　者：阮金华 覃业茗 黄祥林 赵玉琴 谢德明 资付益 李家雄 RUAN Jin-hua;QIN Ye-ming;HUANG Xiang-lin;ZHAO Yu-qin;XIE De-ming;ZI Fu-yi;LI Jia-xiong(Yunnan Emerging Vocational College,Kunming 650501,China;School of Chemistry and Environment,Yunnan Minzu University,Kunming 650500,China)

机构地区：[1]云南新兴职业学院,云南昆明650501 [2]云南民族大学化学与环境学院,云南昆明650500

出　　处：《云南民族大学学报（自然科学版）》2024年第1期71-78,共8页Journal of Yunnan Minzu University:Natural Sciences Edition

基　　金：云南省教育厅科学研究基金(2019J1086).

摘　　要：以巨菌草作为原料,化学活化法制备高比表面积活性炭,在单因素考察基础上,采用响应面分析法对活化温度、活化时间、碱炭比等影响因素进行了条件优化.通过模型分析确定了最佳制备工艺条件为活化温度920℃、活化时间50 min、碱炭比4∶1,该条件下制备的巨菌草基活性炭实际碘吸附值与预测值相近,证明响应面法模型优化分析结果可靠.通过BET、IR和SEM等进行表征,表明所制备的巨菌草基活性炭表面官能团种类丰富,孔隙结构发达,达到了超级活性炭的标准,为巨菌草基活性炭的开发应用提供了制备工艺参数及材料性能参考.The high specific surface area activated carbon was prepared by chemical activation method using Pennisetum sinese as raw material.The influencing factors such as activation temperature,activation time and alkali-carbon ratio were explored by response surface analysis method.The optimal preparation conditions of Pennisetum sinese-based activated carbon were determined that the activation temperature was 920℃,the activation time was 50 min,and the alkali-carbon ratio was 4∶1 by model analysis.The actual iodine adsorption capacity of the prepared Pennisetum sinese-based activated carbon was closed to the predicted adsorption capacity,which was proved that the response surface method model optimization analysis results are reliable.The properties of the materials were characterized using BET,IR and SEM,indicating that the Pennisetum sinese-based activated carbon has reached the standard of super activated carbon due to rich surface functional groups and developed pore structure.The successful preparation of super activated carbon provides a reference for the preparation process parameters and material properties for the development and application of Pennisetum sinese.

关 键 词：巨菌草 活性炭 响应面法 碘吸附值 

分 类 号：TQ28[化学工程—有机化工]