Synthesis and Carbon Dioxide Sorption of Layered Double Hydroxide/Silica Foam Nanocomposites with Hierarchical Mesostructure

被引：15

作者：

Fu, Liling ^{[1
]}

Qi, Genggeng ^{[1
]}

Shekhah, Osama ^{[2
]}

Belmabkhout, Youssef ^{[2
]}

Estevez, Luis ^{[1
]}

Eddaoudi, Mohamed ^{[2
]}

Giannelis, Emmanuel P. ^{[1
]}

机构：

[1] Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA

[2] King Abdullah Univ Sci & Technol, Adv Membranes & Porous Mat Ctr, Thuwal 23955, Saudi Arabia

来源：

CHEMSUSCHEM | 2014年 / 7卷 / 04期

关键词：

carbon dioxide capture; composites; layered double hydroxides; mesoporous materials; silica; HYDROTALCITE-LIKE COMPOUNDS; ION-EXCHANGE INTERCALATION; SILICA SHELL; SOLID BASE; CO2; ADSORPTION; SEPARATION; ADSORBENTS; CR(VI); FILMS;

D O I：

10.1002/cssc.201300973

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Layered double hydroxides (LDHs) with a hierarchical mesostructure are successfully synthesized on mesoporous silica foams by simple impregnation and hydrothermal treatment. The as-synthesized LDH/silica foam nanocomposites show well-defined mesostructures with high surface areas, large pore volumes, and mesopores of 6-7nm. The nanocomposites act as carbon dioxide (CO2) sorbents under simulated flue gas conditions. They also exhibit significantly enhanced CO2 capacities under high-pressure conditions and high CO2/N-2 and CO2/CH4 selectivities.

引用

页码：1035 / 1039

页数：5

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