| 热解活化法制备微孔发达椰壳活性炭及其吸附性能研究 |
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| 引用本文： | 刘雪梅,蒋剑春,孙康,徐凡,许玉.热解活化法制备微孔发达椰壳活性炭及其吸附性能研究[J].林产化学与工业,2012,32(2):126-130. |
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| 作者姓名： | 刘雪梅 蒋剑春 孙康 徐凡 许玉 |
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| 作者单位： | 1. 中国林业科学研究院 林产化学工业研究所;生物质化学利用国家工程实验室;国家林业局 林产化学工程重点开放性实验室;江苏省生物能源与材料重点实验室, 江苏 南京 210042;;2. 中国林业科学研究院 林业新技术研究所, 北京 100091 |
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| 基金项目： | 国家林业局林业公益性行业科研专项(201004051);中国林科院林业新技术所基本科研业务费专项资金(CAFINT2009K02) |
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| 摘 要： | 以椰壳为原料,采用热解活化法制备微孔发达活性炭。研究了活化温度、活化时间对活性炭孔结构和吸附性能的影响。实验结果表明:活化温度为900℃,活化时间为4 h,可制得比表面积为994.42 m2/g的微孔发达活性炭,其碘吸附值为1 295 mg/g,亚甲基蓝吸附值为135 mg/g。N2吸附结果表明活性炭的平均孔径在2 nm左右,总孔容积为0.503 9 cm3/g,其中微孔容积为0.430 3 cm3/g,微孔率达85.39%。对该活性炭进行CO2动态吸附实验,CO2饱和吸附容量为56.61 mg/g,在热解活化法制备椰壳过程中,随着活化温度的升高和活化时间的延长,活性炭的得率有不同程度的降低。
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| 关 键 词： | 活性炭 椰壳 活化 微孔 |
Preparation and Adsorption Properties of Activated Carbon with Developed Micropore from Coconut Shell by Pyrolysis Activation |
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| LIU Xue-mei,JIANG Jian-chun,SUN Kang,XU Fan,XU Yu.Preparation and Adsorption Properties of Activated Carbon with Developed Micropore from Coconut Shell by Pyrolysis Activation[J].Chemistry & Industry of Forest Products,2012,32(2):126-130. |
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| Authors: | LIU Xue-mei JIANG Jian-chun SUN Kang XU Fan XU Yu |
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| Institution: | 1,2(Institute of Chemical Industry of Forest Products,CAF;National Engineering Lab.for Biomass Chemical Utilization;Key and Open Lab.of Forest Chemical Engineering,SFA;Key Lab.of Biomass Energy and Material,Jiangsu Province, Nanjing 210042,China;2.Institute of New Technology of Forestry,CAF,Bejing 100091,China) |
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| Abstract: | Activated carbons were prepared from coconut shell by pyrolysis activation.The effects of activation temperature and time on pore structure and adsorption properties of activated carbons were investigated.The results showed that the prepared carbon has mainly micropore under the condition of activation temperature at 900 ℃ for 4 hours.The surface area of the prepared carbon is 994.42 m2/g with the iodine adsorption of 1 295 mg/g and methylene blue adsorption of 135 mg/g.The results of N2 adsorption showed that the average pore size of the activated carbon is around 2 nm.The micropore volume is 0.430 3 cm3/g and total pore volume of 0.503 9 cm3/g.This indicated that ratio of micropore is 85.39%.The results of CO2 dynamic adsorption showed that the adsorption qulity is up to 56.61 mg/g.With the increase of activation temperature and activation time,the yield of activated carbons is reduced at different degree,in the preparation of activated carbons from cocomt shell by carbonzation. |
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| Keywords: | activated carbon coconut shell activation micropore |
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