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Insights into CO2 and CH4 Adsorption by Pristine and Aromatic Amine-Modified Periodic Mesoporous Phenylene-Silicas
被引:16
作者:
Lourenco, Mirtha A. O.
[1
]
Siquet, Christophe
[2
]
Santos, Joao
[2
]
Jorge, Miguel
[3
]
Gomes, Jose R. B.
[4
]
Ferreira, Paula
[1
]
机构:
[1] Univ Aveiro, Dept Mat & Ceram Engn, CICECO, Campus Univ Santiago, P-3810193 Aveiro, Portugal
[2] Univ Porto, Fac Engn, Lab Associado LSRE LCM, Rua Dr Roberto Frias S-N, P-4200465 Oporto, Portugal
[3] Univ Strathclyde, Dept Chem & Proc Engn, 75 Montrose St, Glasgow G1 1XJ, Lanark, Scotland
[4] Univ Aveiro, Dept Chem, CICECO, Campus Univ Santiago, P-3810193 Aveiro, Portugal
关键词:
PRESSURE SWING ADSORPTION;
CARBON-DIOXIDE;
CHEMICAL-MODIFICATION;
POROUS MATERIALS;
ORGANIC GROUPS;
LANDFILL GAS;
NATURAL-GAS;
SEPARATION;
BIOGAS;
ZEOLITE;
D O I:
10.1021/acs.jpcc.6b04605
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
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.
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页码:14236 / 14245
页数:10
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