Preliminary Study of Activated Carbon Modified by Silica Aerogel

Abstract:

Activated carbon was modified with silica aerogel by the Sol-Gel. The surface characteristics and structure of activated carbon modified by the silica aerogel were characterized with N₂ adsorption method, Scanning Electron Microscope and Thermal Analysis. The experiment results show that the silica aerogel can be used to modify activated carbon for the preparation of composite. SiO₂ aerogel can effectively cover holes in the activated carbon, specific surface area of activated carbon composite modified by SiO₂ aerogel was between activated carbon and silica aerogel. When M_SiO2: M_C is 1:3, specific surface area of the composite was 758.638 m²/g; When M_SiO2:M_C is 1:2, specific surface area of the composite was 760.38 m²/g; When M_SiO2:M_C is 1:1, specific surface area of the composite was 862.755 m²/g.

• Periodical: Advanced Materials Research (Volumes 785-786)
• Pages: 749-752
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.785-786.749
• Online since: September 2013
• Authors: Ya Jun Luo*, Qian Yan, Yong Chao Zhou, Deng Liang He, Xiao Li Hu
• Keywords: Activated Carbon, Modified, Silica Aerogel

References

[1] Yao Mingming, Yao Xin, Preparation and characterization of hydrophobic silica aerogels at ambient pressure, Guangdong Chemical Industry. 37 (2010)5-7（In Chinese）.

[2] Shan Xiaomei, Zhu Shuquan, Zhanng Wenhui, et al, Modification surface properties of coal-base and coconut shell activated carbons by oxidation, Journal of China University of Mining﹠Technology. 32(2003)729-733（In Chinese）.

[3] Li Yunhui, Zhang Wenjuan, Zhang Weina, et al, Characterization of hydrophobic silica aerogels properties, Materials Science & Technology. 15(2007)358-361.

[4] Shen Jun, WangYu, Gan Liua. et al, Preparation of SiO2 aerogels with sol ­gel method and the study of their properties, Journal of Inorganic Materials. 10 (1995)70-75（In Chinese）.

[5] Tong Xiaogang, WangFen, Feng Haitao, Progress on aerogel's preparation and application, Material review. 20 (2006)24-26（In Chinese）.

[6] Liu Zhaohui, Su Xunjia, Hou Genliang, et al, Preparation and characterization of silica aerogels, Inorganic Chemicals Industry. 38(2006) 25-27（In Chinese）.

[7] Wu Zhanwu, Shen Xiaodong, Cui Sheng, et al, The preparation on METS hydrophobic silica aerogel modified by activated carbon composite and its characterization of structure, Journal of Nanjing University of Technology. 34(2012)103-106（In Chinese）.