Preparation and microstructure control of carbon aerogels produced using m-cresol mediated sol-gel polymerization of phenol and furfural

被引：24

作者：

Long Dong-hui ^{[1
]}

Zhang Jie ^{[1
]}

Yang Jun-he ^{[2
]}

Hu Zi-jun ^{[3
]}

Li Tong-qi ^{[3
]}

Cheng Guo ^{[1
]}

Zhang Rui ^{[1
]}

Ling Li-cheng ^{[1
]}

机构：

[1] E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

[2] Shanghai Inst Technol, Shanghai 200235, Peoples R China

[3] Aerosp Inst Mat & Proc Technol, Beijing 100076, Peoples R China

来源：

NEW CARBON MATERIALS | 2008年 / 23卷 / 02期

关键词：

carbon aerogels; sol-gel process; supercritical drying; density; porosity;

D O I：

10.1016/S1872-5805(08)60020-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Carbon aerogels rich in mesopores were prepared by the sol-gel polycondcrisation of phenol, m-cresol, and furfural by an acid catalyst in a 1-propanol solution, followed by supercritical 1-propanol drying and pyrolysis. The effect of the ratios of m-cresol to phenol (m-C/P) on the properties of aerogels was investigated. The acrogels were characterized by infrared spectroscopy, N-2 adsorption, scanning and transmission electron microscopy. It was found that the microstructure of carbon aerogels could be adjusted by the m-C/P ratio. The average mesopore size of carbon aerogels decreased from 47 to 13 nm with increasing m-C/P ratio. The surface area calculated using the Brunauer-Emmett-Teller method, external surface area, and mesopore volume of carbon aerogels, all exhibited maxima at the m-C/P ratio of 0.33.

引用

页码：165 / 170

页数：6

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