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• 材料科学与技术 • 上一篇    下一篇

KOH活化丝瓜络制备高比表面积活性炭

李园园1,2,陈少华2,张召基2,石建稳2,汤凤霞1   

  1. 1集美大学生物工程学院,福建 厦门 361021;2中国科学院城市环境研究所城市环境与健康重点实验室,福建 厦门 361021
  • 出版日期:2012-06-05 发布日期:2012-06-25

Preparation of high surface area activated carbons from Luffa cylindrical sponge by KOH activation

LI Yuanyuan1,2,CHEN Shaohua2,ZHANG Zhaoji2,SHI Jianwen2,TANG Fengxia1   

  1. 1 School of Bioscience Engineering,Jimei University,Xiamen 361021,Fujian,China; 2 Key Laboratory of Urban Environment and Health,Institute of Urban Environment, Chinese Academy of Sciences,Xiamen 361021,Fujian,China
  • Online:2012-06-05 Published:2012-06-25

摘要: 为了探讨以丝瓜络为原料制备高比表面积活性炭的最佳条件,通过设计正交实验,研究了碱炭比、活化温度、活化时间和升温速率等因素对KOH活化丝瓜络制备活性炭性能的影响。结果表明:KOH活化丝瓜络制备活性炭的最佳条件为:碱炭比为4、活化温度800 ℃,活化时间30 min,升温速率10 ℃/ min。在此条件下制备的活性炭为多孔、非晶型的无定形碳,具有高的比表面积(3545 m2/g)和强的吸附性能,其碘值和亚甲基蓝值分别达到2926 mg/g和528.58 mg/g;为丝瓜络的高值化利用提供了一条有价值的途径。

关键词: 丝瓜络, KOH, 活性炭

Abstract: In this study,activated carbon with high surface area was prepared from Luffa cylindrical sponge by KOH activation. The effects of KOH/C ratio,activation temperature,activation time and heating rate on the properties of as-prepared activated carbons were investigated by means of orthogonal test design. Results showed that the optimal condition is following:KOH/C weight ratio 4,activation temperature 800 ℃,activation time 30 min,and heating rate 10 ℃/min. The as-prepared activated carbon is porous and amorphous,which has high surface area of 3545 m2/g,and the iodine and methylene blue adsorption value reached to 2926 mg/g and 528.58 mg/g,respectively. This study presents a valuable pathway for comprehensive utilization of Luffa cylindrical sponge.

Key words: Luffa cylindrical sponge, KOH, activated carbon