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The pore structure is assessed by N2 adsorption/desorption isotherms at -196℃. The specific surface area and the burnt-off are increased with the increase of the activation temperature or the activation time, and are more dependent on the activation time when activated at higher temperatures. With increasing activation time, the total pore volume and micropore volume are increased more significantly when activated at 750℃ and 800℃, while the mesopore volume is high at the early stage of activations at 650℃ and 700℃ then is decreased, and does not develop until the later stage of activations at 750℃ and 800℃. 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科技导报
| 专题论文 2014, 32(9): 26-30
水蒸气活化液化木基活性碳纤维孔隙结构表征
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金枝, 赵广杰
作者信息
北京林业大学材料科学与技术学院, 北京100083
通讯作者:
赵广杰，教授，研究方向为木材科学与技术，电子信箱：zhaows@bjfu.edu.cn
Pore Structural Characterization of Liquefied Wood-based Activated Carbon Fiber by Water Steam Activation
Affiliations
出版时间: 2014-03-28
doi: 10.3981/j.issn.1000-7857.2014.09.003
文章导航
研究了不同活化温度、不同活化时间下，水蒸气活化液化木基活性碳纤维的孔隙结构特性。-196℃氮气吸附脱附等温线用于检测孔隙结构。结果表明，随着活化温度或活化时间的增加，比表面积和烧失率增加，且在较高活化温度时增加率更高。随着活化时间延长，活化温度为750~800℃时总孔容和微孔孔容增加明显，中孔孔容在650~700℃活化初期和750~800℃活化后期均有所发展。各活化温度下，随着活化时间的延长，在微孔范围内孔径分布均有所扩大且趋向多样化。
The pore structural characteristics of the liquefied wood-based activated carbon fiber with water steam activations at different activation temperatures and activation times are studied. The pore structure is assessed by N2 adsorption/desorption isotherms at -196℃. The specific surface area and the burnt-off are increased with the increase of the activation temperature or the activation time, and are more dependent on the activation time when activated at higher temperatures. With increasing activation time, the total pore volume and micropore volume are increased more significantly when activated at 750℃ and 800℃, while the mesopore volume is high at the early stage of activations at 650℃ and 700℃ then is decreased, and does not develop until the later stage of activations at 750℃ and 800℃. The pore size distribution analysis indicates that the micropore size distribution becomes increasingly heterogeneous with increasing the activation time under all activation temperatures.
activated carbon fiber
/
liquefied wood
/
pore structure
金枝, 赵广杰.
水蒸气活化液化木基活性碳纤维孔隙结构表征.
科技导报,
2014
, 32
(9)
: 26
-30
.
DOI: 10.3981/j.issn.1000-7857.2014.09.003
JIN Zhi, ZHAO Guangjie.
Pore Structural Characterization of Liquefied Wood-based Activated Carbon Fiber by Water Steam Activation[J].
Science & Technology Review ,
2014
, 32
(9)
: 26
-30
.
DOI: 10.3981/j.issn.1000-7857.2014.09.003
2014年第32卷第9期
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文章信息
doi: 10.3981/j.issn.1000-7857.2014.09.003
接收时间：2013-12-13
首发时间：2014-04-10
出版时间：2014-03-28
收稿日期：2013-12-13
修回日期：2014-02-19
通讯作者:
赵广杰，教授，研究方向为木材科学与技术，电子信箱：zhaows@bjfu.edu.cn
https://castjournals.cast.org.cn/joweb/kjdb/CN/10.3981/j.issn.1000-7857.2014.09.003
引用本文
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2种不同金属材料的力学参数
科 属数 种数 占总种数比例 属 种数 占总种数比例 鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78 小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39 多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39 红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87 小菇属 Mycena 11 5.26 光柄菇属 Pluteus 5 2.39 红菇属 Russula 17 8.13 栓菌属 Trametes 5 2.39
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