Preparation of carbon dioxide adsorbents from the chemical activation of urea–formaldehyde and melamine–formaldehyde resins

Adsorption is considered to be one of the more promising technologies for the capture of CO 2 from flue gases. In general, nitrogen enrichment is reported to be effective in enhancing the specific adsorbent–adsorbate interaction for CO 2. Nitrogen enriched carbons were produced from urea–formaldehyd...

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Bibliographic Details
Published in:Fuel (Guildford) 2007, Vol.86 (1), p.22-31
Main Authors: Drage, T.C., Arenillas, A., Smith, K.M., Pevida, C., Piippo, S., Snape, C.E.
Format: Article
Language:English
Subjects:
Adsorption
Air pollution caused by fuel industries
Applied sciences
Carbon materials
CO 2 adsorbents
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Pollution reduction
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Summary:Adsorption is considered to be one of the more promising technologies for the capture of CO 2 from flue gases. In general, nitrogen enrichment is reported to be effective in enhancing the specific adsorbent–adsorbate interaction for CO 2. Nitrogen enriched carbons were produced from urea–formaldehyde and melamine–formaldehyde resins polymerised in the presence of K 2CO 3 as a chemical activation agent, with activation undertaken over a range of temperatures. CO 2 adsorption capacity was determined to be dependent upon both textural properties and more importantly nitrogen functionality. Adsorbents capable of capturing above 8 wt.% CO 2 at 25 °C were produced from the chemical activation of urea–formaldehyde resin at 500 °C. Chemical activation seems to produce more effective adsorbents than CO 2 activation.
ISSN:0016-2361
1873-7153
DOI:10.1016/j.fuel.2006.07.003