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Citation: FAN Hai-Juan, XU Qun, CAO Yan-Xia, ZHENG Shi-Jun, GUO Yi-Qun. Preparation of Porous Alumina Material with Template Method in Supercritical CO₂[J]. Chinese Journal of Applied Chemistry, ;2007, 24(1): 17-20. shu

Preparation of Porous Alumina Material with Template Method in Supercritical CO₂

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

Corresponding author: XU Qun,
Received Date: 1 December 2005
Available Online: 10 May 2006
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 alumina material was prepared with activated carbon as template and aluminum acetylacetonate as precursor in supercritical carbon dioxide (SC-CO₂).The effects of coating temperature and pressure on the coating ratio in the supercritical CO₂ were studied, and optimal coating conditions at 80℃ and 22 MPa were explored.The X-ray diffraction (XRD) result shows that the product is α-Al₂O₃, the BET surface areas calculated from the nitrogen adsorption isotherms of the product is up to 67.20 m²/g and the average pore diameter is about 4 nm.SEM experimental results indicated the activated carbon template was well replicated by the porous product and TEM results showed the Al₂O₃ nanoparticles were well dispersed in the product.
- supercritical carbon dioxide,
- activated carbon,
- template,
- alumina,
- porous
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Preparation of Porous Alumina Material with Template Method in Supercritical CO2

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通讯作者: 陈斌, bchen63@163.com

Preparation of Porous Alumina Material with Template Method in Supercritical CO₂