authors |
Lourenco, MAO; Siquet, C; Santos, J; Jorge, M; Gomes, JRB; Ferreira, P |
nationality |
International |
journal |
JOURNAL OF PHYSICAL CHEMISTRY C |
keywords |
PRESSURE SWING ADSORPTION; CARBON-DIOXIDE CAPTURE; ACTIVATED CARBON; LANDFILL GAS; CHEMICAL-MODIFICATION; POROUS MATERIALS; ORGANIC GROUPS; BETA-ZEOLITE; NATURAL-GAS; SEPARATION |
abstract |
The synthesis and characterization of pristine and amine-functionalized periodic mesoporous phenylene-silicas having different pore sizes are reported. We explore the potential of these materials for CO2/CH4 separation, by studying the adsorption of pure CO2 and pure CH4 gases. The aminated periodic mesoporous phenylene-silica with the smallest pore size is the best adsorbent to CO2, presenting a Henry's constant of 0.56 mol.kg(-1).bar(-1) at 35 degrees C. However, the corresponding Henry's constant for CH4 is extremely low (0.06 mol.kg(-1).bar(-1) at 35 degrees C). There is a direct correlation between the % of T-SMP(2) silanols species and the values of the Henry's CO, constants, which may be used to theoretically predict experimental CO2 Henry's constants of potential adsorbents. |
publisher |
AMER CHEMICAL SOC |
issn |
1932-7447 |
year published |
2016 |
volume |
120 |
issue |
26 |
beginning page |
14236 |
ending page |
14245 |
digital object identifier (doi) |
10.1021/acs.jpcc.6b04605 |
web of science category |
Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary |
subject category |
Chemistry; Science & Technology - Other Topics; Materials Science |
unique article identifier |
WOS:000379457000041
|