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.
引用
收藏
页码:14236 / 14245
页数:10
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