Nitrogen-enriched carbonaceous materials with hierarchical micro-mesopore structures for efficient CO 2 capture
Carboxyl-rich porous carbons (CPCs) derived from glucose are prepared by a hydrothermal method in the presence of acrylic acid and non-ionic surfactant Brij 72 as structure-directing agents. Tetraethylenepentamine molecules are then grafted onto the surfaces of CPCs via acylation-amidation route, yi...
| Glavni autori: | , , |
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| Format: | Journal article |
| Jezik: | English |
| Izdano: |
2012
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| Sažetak: | Carboxyl-rich porous carbons (CPCs) derived from glucose are prepared by a hydrothermal method in the presence of acrylic acid and non-ionic surfactant Brij 72 as structure-directing agents. Tetraethylenepentamine molecules are then grafted onto the surfaces of CPCs via acylation-amidation route, yielding nitrogen-enriched porous carbons (NPCs). Material characterizations reveal that the CPCs display high surface areas with micro and mesoporous structures. Despite the surface functionalization of CPCs via acylation-amidation route the porous structures of NPCs are maintained. As a result, the NPCs exhibit excellent CO 2 capture capacity (3.2mmolg -1) with high selectivity of CO 2 over N 2 (>46) at 298K and 1bar. In addition, good reversibility of CO 2 adsorption can be achieved at different temperatures. © 2012. |
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