KOH活化丝瓜络制备高比表面积活性炭  

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

作　　者：李园园[1,2] 陈少华[2] 张召基[2] 石建稳[2] 汤凤霞[1] 

机构地区：[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　　处：《化工进展》2012年第6期1274-1279,共6页Chemical Industry and Engineering Progress

基　　金：厦门市科技计划(3502Z20111049);福建省科技计划(2010I0014)项目

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。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.

关 键 词：丝瓜络 KOH 活性炭 

分 类 号：TQ424.19[化学工程]