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

Abstract

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, Luffa cylindrical sponge, KOH, activated carbon

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, 丝瓜络, KOH, 活性炭

LI Yuanyuan1，2，CHEN Shaohua2，ZHANG Zhaoji2，SHI Jianwen2，TANG Fengxia1. Preparation of high surface area activated carbons from Luffa cylindrical sponge by KOH activation[J]. Chemical Industry and Engineering Progree.

李园园1，2，陈少华2，张召基2，石建稳2，汤凤霞1. KOH活化丝瓜络制备高比表面积活性炭[J]. 化工进展.

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

KOH活化丝瓜络制备高比表面积活性炭

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