Abstract
Nanoporous (styrene-divinylbenzene)-based ion exchange resin-based carbons (MPCs) were prepared by MgO-templating synthesis and activated by KOH. MPCs were prepared from a (styrene-divinylbenzene)-based ion exchange resin by the carbonization of a mixture with Mg gluconate at 900 °C. And then, the prepared MPCs were treated with KOH at KOH/MPCs ratios ranging from 0.5 to 4 at 800 °C. Low KOH/MPCs ratios (KOH/MPCs ratio = 1) tended to favor the formation of micropores, whereas higher KOH/MPCs (KOH/MPCs ratio = 4) led to the formation of mesopores. The treated MPCs with a KOH/MPCs ratio = 1 exhibited the best CO 2 adsorption value of 266 mg g -1 at 1 bar. However, the treated MPCs with a KOH/MPCs ratio = 3 exhibited the best CO 2 adsorption value of 1385 mg g -1 at 30 bar. This result indicated that the CO 2 adsorption capacity of nanoporous carbons attributed to the mesopore volume fraction at higher pressure.
| Original language | English |
|---|---|
| Pages (from-to) | 91-96 |
| Number of pages | 6 |
| Journal | Materials Chemistry and Physics |
| Volume | 137 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 15 Nov 2012 |
| Externally published | Yes |
Keywords
- Adsorption
- Heat treatment
- Microporous materials
- Microstructure
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