Control of Uniform and Interconnected Macroporous Structure in PolyHIPE for Enhanced CO2 Adsorption/Desorption Kinetics.
The highly uniform and interconnected macroporous polymer materials were prepared within the high internal phase hydrosol-in-oil emulsions (HIPEs). Impregnated with polyethylenimine (PEI), the polyHIPEs were then employed as solid adsorbents for CO2 capture. Thermodynamic and kinetic capture-and-release tests were performed with pure CO2, 10% CO2/N2, and moist CO2, respectively. It has shown that the polyHIPE with suitable surface area and PEI impregnation exhibits high CO2 adsorption capacity, remarkable CO2/N2 selectivity, excellent adsorption/desorption kinetics, enhanced efficiency in the presence of water, and admirable stability in capture and release cycles. The results demonstrate the superior comprehensive performance of the present PEI-impregnated polyHIPE for CO2 capture from the postcombustion flue gas.
State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology , Beijing 100029, China.|State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University , Beijing 100084, China.
Quanyong
Q
Wang
State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology , Beijing 100029, China.|State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University , Beijing 100084, China.
Yao
Y
Liu
State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University , Beijing 100084, China.
Jian
J
Chen
State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology , Beijing 100029, China.
Zhongjie
Z
Du
State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology , Beijing 100029, China.
Jianguo
J
Mi
D000327:Adsorption; D002245:Carbon Dioxide / Q000737:chemistry*; D007700:Kinetics; D011094:Polyethyleneimine / Q000737:chemistry*
D002245:Carbon Dioxide; D011094:Polyethyleneimine