CO2 Capture in Different Carbon Materials

被引：141

作者：

Jimenez, Vicente ^{[1
]}

Ramirez-Lucas, Ana ^{[1
]}

Antonio Diaz, Jose ^{[1
]}

Sanchez, Paula ^{[1
]}

Romero, Amaya ^{[1
]}

机构：

[1] Univ Castilla La Mancha, Fac Ciencias Quim, Escuela Tecn Agr, Dept Ingn Quim, E-13071 Ciudad Real, Spain

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2012年 / 46卷 / 13期

关键词：

EXPANDED MESOPOROUS SILICA; HYDROGEN STORAGE; ACTIVATED CARBONS; HIGH-CAPACITY; POROSITY DEVELOPMENT; GRAPHITE NANOFIBERS; ADSORPTION; DIOXIDE; METHANE; EQUILIBRIUM;

D O I：

10.1021/es2046553

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this work, the CO2 capture capacity of different types of carbon nanofibers (platelet, fishbone, and ribbon) and amorphous carbon have been measured at 26 degrees C as at different pressures. The results showed that the more graphitic carbon materials adsorbed less CO2 than more amorphous materials. Then, the aim was to improve the CO2 adsorption capacity of the carbon materials by increasing the porosity during the chemical activation process. After chemical activation process, the amorphous carbon and platelet CNFs increased the CO2 adsorption capacity 1.6 times, whereas fishbone and ribbon CNFs increased their CO2 adsorption capacity 1.1 and 8.2 times, respectively. This increase of CO2 adsorption capacity after chemical activation was due to an increase of BET surface area and pore volume in all carbon materials. Finally, the CO2 adsorption isotherms showed that activated amorphous carbon exhibited the best CO2 capture capacity with 72.0 wt % of CO2 at 26 degrees C and 8 bar.

引用

页码：7407 / 7414

页数：8

共 57 条

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