Insights into CO2 and CH4 Adsorption by Pristine and Aromatic Amine-Modified Periodic Mesoporous Phenylene-Silicas

被引：17

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

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2016年 / 120卷 / 26期

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

页码：14236 / 14245

页数：10

共 54 条

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