化学
微型多孔材料
吸附
无定形固体
纹理(宇宙学)
活性炭
环境压力
化学工程
碳纤维
有机化学
复合材料
材料科学
复合数
工程类
物理
图像(数学)
人工智能
热力学
计算机科学
作者
Hao Yang,Maochu Gong,Yaoqiang Chen
出处
期刊:Journal of Natural Gas Chemistry
[Elsevier]
日期:2011-09-01
卷期号:20 (5): 460-464
被引量:72
标识
DOI:10.1016/s1003-9953(10)60232-0
摘要
Three kinds of activated carbons were prepared using coconut-shell s as carbon precursors and characterized by XRD, FT-IR and texture property test. The results indicate that the prepared activated carbons were mainly amorphous and only a few impurity groups were adsorbed on their surfaces. The texture property test reveals that the activated carbons displayed different texture properties, especially the micropore size distribution. The adsorption capacities of the activated carbons were investigated by adsorbing CH4, CO2, N2 and O2 at 25 °C in the pressure range of 0-200 kPa. The results reveal that all the activated carbons had high CO2 adsorption capacity, one of which had the highest CO2 adsorption value of 2.55 mmol/g at 200 kPa. And the highest adsorption capacity for CH4 of the activated carbons can reach 1.93 mmol/g at 200 kPa. In the pressure range of 0-200 kPa, the adsorption capacities for N2 and O2 were increased linearly with the change of pressure and K-AC is an excellent adsorbent towards the adsorption separation of greenhouse gases.
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