| Autor: |
Yu'an Huang, Shenghua Hu, Songlin Zuo, Zheng Xu, Chenghui Han, Jianyi Shen |
| Zdroj: |
Journal of Materials Chemistry; 11/7/2009, Vol. 19 Issue 41, p7759-7764, 6p |
| Abstrakt: |
A new and facile method was developed for the preparation of mesoporous carbon materials from soluble and hydrolyzable carbohydrates with a metal chloride template. The preparation procedure and related mechanism were demonstrated using fructose and ZnCl2as examples of the carbon precursor and template, respectively. Since both fructose and ZnCl2are soluble in water, they can be mixed homogeneously initially. Fructose was first hydrolyzed to hydroxymethylfurfural, which was then polymerized to form a resin; both reactions were catalyzed by the acidic ZnCl2. During the carbonization, ZnCl2might act as an activation agent promoting the carbonization of cured resin and a template for the formation of mesopores. Mesoporous carbon materials with high surface areas (1400–2000 m2g−1), large pore volumes (1.44–2.72 cm3g−1) and 100% mesopores with an average size of 3–7 nm can be prepared by using this simple and cost-effective method. The materials could be used as adsorbents and catalyst supports for relatively large molecules. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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