H3PO4-KOH协同催化活化制备葵花盘活性炭  

SYNERGISTIC CATALYSIS AND ACTIVATION OF H3PO4-KOH TO PERPARE SUNFLOWER DISK ACTIVATED CARBON

作　　者：邢献军 刘建华 李珊 马培勇 张贤文 Xing Xianjun;Liu Jianhua;Li Shan;Ma Peiyong;Zhang Xianwen(School of Chemistry and Chemical Engineering,Hefei University of Technology,Hefei 230009,China;Institute of Advanced Energy Technology&Equipment,Hefei University of Technology,Hefei 230009,China;School of Automobile and Transportation Engineering,Hefei University of Technology,Hefei 230009,China;National City Energy Measurement Center(Anhui),Hefei 230051,China)

机构地区：[1]合肥工业大学化学与化工学院,合肥230009 [2]合肥工业大学先进能源技术与装备研究院,合肥230009 [3]合肥工业大学汽车与交通工程学院,合肥230009 [4]国家城市能源计量中心(安徽),合肥230051

出　　处：《太阳能学报》2020年第11期334-340,共7页Acta Energiae Solaris Sinica

基　　金：北京市教育委员会市属高校创新能力提升计划(J2014QTXM0204);安徽省重点研究与开发计划(1704a07020087);安徽省科技计划(2013AKKG0398)。

摘　　要：以生物质葵花盘为原料,经H3PO4酸性水热,清洗烘干后加入一定量的KOH高温活化,通过单因素实验考察活化温度、活化时间、H3PO4添加量、KOH添加量对葵花盘活性炭比表面积的影响。结果表明:活化温度为900℃、活化时间为30 min、水热溶剂H3PO4与H2O体积比为20∶15、浸渍比为4.0,活性炭比表面积最优,达到2843.96 m^2/g,总孔容为1.89 cm^3/g,平均孔径为2.99 nm。Dried sunflower disk was used as biomass raw material to produce activated carbon through hydrothermal treatment with phosphoric acid.Subsequently it was dried and activated with a certain amount of KOH at high temperature.The activation temperature,activation time,amount of H3PO4 addition,and amount of KOH addition were compared through its resulting activated carbon’s specific surface area.The sunflower disk activated carbon was examined through single factor experiments.The results show that the activation temperature of 900°C,the activation time of 30 minutes,the volume ratio of hydrothermal solvent H3PO4 to H2O of 20:15,an impregnation ratio of 4.0,are the best conditions to prepare the highest specific surface area in present activated carbon,reaching 2843.96 m2/g.The pore volume is 1.89 cm3/g and the average pore size is 2.99 nm.

关 键 词：活性炭 比表面积 孔容孔径 酸性水热 高温活化 葵花盘 

分 类 号：TQ424.1[化学工程]