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Citation: XU Qun, LI Jian-Bo, DING Kun-Lun, HE Liu-Min, GUO Yi-Qun. Preparation of Porous Silica from TEOS-coated Activated Carbon in Supercritical CO₂[J]. Chinese Journal of Applied Chemistry, ;2005, 22(8): 835-839. shu

Preparation of Porous Silica from TEOS-coated Activated Carbon in Supercritical CO₂

XU Qun ^a,, ,
LI Jian-Bo ^a ,
DING Kun-Lun ^a ,
HE Liu-Min ^a ,
GUO Yi-Qun ^b

1.
a College of Materials Engineering;
2.
b Department of Chemistry, Zhengzhou University, Zhengzhou 450052

Corresponding author: XU Qun,
Received Date: 1 November 2004
Available Online: 25 March 2005
Fund Project: 国家自然科学基金(20404012) (20404012)河南省自然科学基金(0411020900) (0411020900)河南省杰出青年科学基金(0512001200)资助项目 (0512001200)

Porous silica was prepared from tetraethyl orthosilicate (TEOS) coated activated carbon in supercritical CO₂.The pore structure of the porous silica was determined.The multipoint BET surface area,total pore volume,and average pore size of the product prepared via supercritical CO₂ coating were 1 147 m²/g),1.4 cm³/g and 2.20 nm,respectively.These results were better than that of the porous silica material prepared via simple immersion coating.In addition,the effects of various factors on the coating in supercritical fluids (SCF) were studied,and improved coating conditions were explored.
- supercritical carbon dioxide,
- activated carbon,
- template,
- coating,
- porous silica
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Preparation of Porous Silica from TEOS-coated Activated Carbon in Supercritical CO2

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通讯作者: 陈斌, bchen63@163.com

Preparation of Porous Silica from TEOS-coated Activated Carbon in Supercritical CO₂