Preparation of corncob activated carbon and its gas storage

被引：0

作者：

Zhou, Yaping ^{[1
]}

Wu, Di ^{[1
]}

Liu, Jia ^{[2
]}

Zheng, Juanjuan ^{[1
]}

Sun, Yan ^{[1
]}

机构：

[1] School of Sciences, Tianjin University

[2] School of Chemical Engineering and Technology, Tianjin University

来源：

Tianjin Daxue Xuebao (Ziran Kexue yu Gongcheng Jishu Ban)/Journal of Tianjin University Science and Technology | 2013年 / 46卷 / 10期

关键词：

Activated carbon; Adsorption; Gas separating; Methane storage; Phosphoric acid activation;

D O I：

10.11784/tdxb20131014

中图分类号：

学科分类号：

摘要：

The research of gas adsorption is extremely important in gas storage, the emission reduction of greenhouse gas, the control of atmospheric pollution and so on. Corncob was used as raw material to prepare activated carbon with a high content of mesopores using phosphoric acid activation. Its specific surface area reached 1610 m2/g, and the pore volume was 1.72 cm3/g, with the pore volume of mesopores reaching 1.14 cm3/g, accounting for 66% of the total pore volume. The adsorption isotherms of H2, N2, CH4 and CO2 were measured, respectively, which indicated that there were obvious differences in adsorption capacity between CO2 and other gases. The adsorption selectivity between CO2 and CH4, N2, H2 at 0.4 MPa was 2.76, 7.63, 42.31, respectively. Therefore, this activated carbon is beneficial to carbon dioxide separation. In addition, the sorption isotherms of CH4 on this activated carbon were studied in the presence of water. As pore size was conducive to the formation of methane hydrate, the amount of methane sorption increased by 82% compared with that of dried sample. The enthalpy of formation of methane hydrate was calculated to be -64.37 kJ/mol by Clausius-Clapeyron equation.

引用

页码：939 / 944

页数：5

共 35 条

[1]

Zuo S., Ni C., Jiang Z., Production of activated carbon from cotton stack by the activation of phosphoric acid, China Forestry Science and Technology, 19, 4, pp. 46-47, (2005)

[2]

Zuo S., Mitsuhiro M., Study on preparation of acidic granular activated carbon by air-phosphoric acid activation of charcoal, Chemistry and Industry of Forest Products, 30, 6, pp. 13-16, (2010)

[3]

Zuo S., Liu J., Ni C., Preparation of activated carbons from cotton stalk by low-temperature activation using phosphoric acid, Chemistry and Industry of Forest Products, 28, 6, pp. 44-48, (2008)

[4]

Hulicova-Jurcakova D., Puziy A.M., Poddubnaya O.I., Et al., Highly stable performance of supercapacitors from phosphorus-enriched carbons, J Am Chem Soc, 131, 14, pp. 5026-5027, (2009)

[5]

Soleimani M., Kaghazchi T., Agricultural waste conversion to activated carbon by chemical activation with phosphoric acid, Chemical Engineering and Technology, 30, 5, pp. 649-654, (2007)

[6]

Fu R., Tang L., Huang A., Et al., Studies on the production conditions and applications of the activated carbon fibers with phosphoric acid activation, New Carbon Materials, 16, 3, pp. 6-11, (2001)

[7]

Zhang H., Ye L., Yang L., Preparation and pore texture of activated carbon from sawdust by phosphoric acid activation, Chemical Industry and Engineering Progress, 23, 5, pp. 524-528, (2004)

[8]

Jiang Y., Bai M., Zhuang X., Ctive carbon from bamboo shavings by phosphoric acid method, Journal of Chemical Industry of Forest Products, 38, 3, pp. 17-19, (2004)

[9]

Rosas J.M., Bedia J., Rodriguez-Mirasol J., Et al., On the preparation and characterization of chars and activated carbons from orange skin, Fuel Process Technol, 91, 10, pp. 1345-1354, (2010)

[10]

Ozcimen D., Ersoy-Mericboyu A., Removal of copper from aqueous solutions by adsorption onto chestnut shell and grapeseed activated carbons, J Hazard Mater, 168, 2-3, pp. 1118-1125, (2009)

← 1 2 3 4 →