Amine - modified SBA-15 / Xinlong Yan in Industrial & engineering chemistry research, Vol. 50 N° 6 (Mars 2011)  

Amine - modified SBA-15 : effect of pore structure on the performance for CO2 capture [texte imprimé] / Xinlong Yan, Auteur ; Lei Zhang, Auteur ; Ying Zhang, Auteur . - 2011 . - pp. 3220-3226.
Chimie industrielle
Langues : Anglais (eng)
in Industrial & engineering chemistry research > Vol. 50 N° 6 (Mars 2011) . - pp. 3220-3226

Mots-clés :	Carbon dioxide Pore structure
Résumé :	Several SBA-15 silica materials with different pore structures were synthesized and functionalized with poly(ethyleneimine) (PEI). The as-prepared materials were characterized by XRD, SEM, TG, FT-IR, and N2 physisorption techniques followed by testing for CO2 capture using a N2 stream containing 15.1 v/v% CO2 in the temperature range of 30- 75 °C. The results showed that the CO2 adsorption capacity linearly increased with the total pore volume of the SBA-15 phases in the tested temperature range (R2 > 0.94). Temperature also showed a strong influence on CO2 adsorption capacity. SBA-15 material with the largest pore volume (1.14 cm3 g-1) exhibited the largest CO2 adsorption capacity (105.2 mg g-1 adsorbent) with 15.1 v/v% CO2 in N2 at 75 °C and atmospheric pressure. Pore size was found not to be the main factor influencing the CO2 adsorption capacity of these PEI-modified SBA-15 materials. Adsorption-desorption cycles (12) revealed that the adsorbents with PEI loaded inside the pore channels were found to be quite stable, as they retained their CO2 adsorption capacity with many cycles.
DEWEY :	660
ISSN :	0888-5885
En ligne :	http://cat.inist.fr/?aModele=afficheN&cpsidt=23944487