高温自生压活化制备高微孔率活性炭研究

doi:10.3969/j.issn.0253-2417.2015.04.009

林产化学与工业 ›› 2015, Vol. 35 ›› Issue (4): 53-58.doi: 10.3969/j.issn.0253-2417.2015.04.009

高温自生压活化制备高微孔率活性炭研究

孙康¹, 蒋剑春¹, 卢辛成¹, 陈超¹, 贾羽洁¹

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;江苏省生物质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

收稿日期:2014-12-25 出版日期:2015-08-25 发布日期:2015-08-29
通讯作者: 蒋剑春(1955—),研究员,博士,博士生导师,主要从事生物质能源和炭材料的研究开发工作;E-mail:bio-energy@163.com。 E-mail:bio-energy@163.com
作者简介:孙康(1976—),男,安徽当涂人,副研究员,博士,主要从事炭材料开发与应用的研究;E-mail:sunkang0226@163.com
基金资助:
林业公益性行业专项(201404610);中国林科院林业新技术所基本科研业务费专项资金(CAFINT2013C02)

Preparation of High Microporosity Activated Carbon by Autogenic Pressure under High Temperature

SUN Kang¹, JIANG Jian-chun¹, LU Xin-cheng¹, CHEN Chao¹, JIA Yu-jie¹

1. 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. Research Institute of Forestry New Technology, CAF, Beijing 100091, China

Received:2014-12-25 Online:2015-08-25 Published:2015-08-29

摘要/Abstract

摘要： 以椰壳、杏核、油茶壳和杉木屑为原料,不外加活化剂,采用高温自生压活化法制备微孔发达的活性炭,研究了反应条件对活性炭孔结构和吸附性能的影响。结果表明,以椰壳原料,在自生压力下选择活化温度900 ℃并保温6 h,制得的活性炭得率13.8%,微孔率达87.8%,比表面积1194 m²/g、总孔容积0.528 cm³/g、碘吸附值1280 mg/g和亚甲基蓝吸附值315 mg/g。自生压活化机理研究表明,木质原料热解产生的水蒸气和二氧化碳形成了良好的混合活化气氛,密闭反应器内产生的自生压力有效促进了气固活化反应的进行,明显提高微孔率。为活性炭生产提供了一种无污染,清洁方便,高得率的新型活化方法。

关键词: 活性炭, 自生压, 微孔, 自活化

Abstract: By using coconut shell, almond shell, camellia nutshell and Chinese fir sawdust as raw materials, high microporosity activated carbons were prepared via the activation method of autogenic pressure at elevated temperatures without activating agent. The effects of activation temperature, activation time and system pressure on the pore structure and adsorption properties of AC were studied. The results showed that coconut shell based AC was prepared with microporisty rate of 87.8%, and the yield was 13.8% under the autogenic pressure at elevated temperatures with activation 900 ℃ kept for 6 h. The surface area, total volume, iodine value, and methylene blue value were 1194.4 m²/g, 0.528 cm³/g, 1280 mg/g, and 315 mg/g, respectively. Water vapour and carbon dioxide generated from pyrolysis of woody materials formed mixed activation agent, and the autogenous pressure effectively promote the activation reaction rate of gas and solid. The activation method of autogenic pressure at elevated temperatures was a kind of new activation method which had good economic and environmental benefits, since the production process could keep clean and convenient without any pollution and the yield of product was high.

Key words: activated carbon, autogenic pressure, microspore, self-activation

中图分类号:

TQ35
TQ424

孙康, 蒋剑春, 卢辛成, 陈超, 贾羽洁. 高温自生压活化制备高微孔率活性炭研究[J]. 林产化学与工业, 2015, 35(4): 53-58.

SUN Kang, JIANG Jian-chun, LU Xin-cheng, CHEN Chao, JIA Yu-jie. Preparation of High Microporosity Activated Carbon by Autogenic Pressure under High Temperature[J]. Chemistry and Industry of Forest Products, 2015, 35(4): 53-58.

参考文献

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高温自生压活化制备高微孔率活性炭研究

Preparation of High Microporosity Activated Carbon by Autogenic Pressure under High Temperature

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