期刊
CHEMISTRY OF MATERIALS
卷 25, 期 9, 页码 1630-1635出版社
AMER CHEMICAL SOC
DOI: 10.1021/cm400019f
关键词
Schiff-base chemistry; organic porous polymer; small gas uptake; adsorption selectivity
资金
- National Science Foundation [IIP-1230142]
- MAST center
- 3M Non-Tenured Faculty Award
- Office of Energy Efficiency and Renewable Energy of the U.S. Department of Energy [DE-AC36-08GO28308]
- Div Of Industrial Innovation & Partnersh
- Directorate For Engineering [1230142, 1034720] Funding Source: National Science Foundation
- Div Of Industrial Innovation & Partnersh
- Directorate For Engineering [1034710] Funding Source: National Science Foundation
A series of novel porous polymer frameworks (PPFs) with [3 + 4] structure motif have been synthesized from readily accessible building blocks via imine condensation, and the dependence of gas adsorption properties on the building block dimensions and functionalities was studied. The resulting imine-linked frameworks exhibit high surface area: the Brunauer-Emmett-Teller (BET) specific surface area up to 1740 m(2) g(-1), and a Langmuir surface area up to 2157 m(2) g(-1). More importantly, the porous frameworks exhibit outstanding H-2 (up to 2.75 wt 96, 77 K, 1 bar), CO2 (up to 26.7 wt %, 273 K, 1 bar), CH4 (up to 2.43 wt %, 273 K, 1 bar), and C2H2 (up to 17.9 wt %, 273 K, 1 bar) uptake, which are among the highest reported for organic porous materials. PPFs exhibit good ideal selectivities for CO2/N-2 (14.5/1-20.4/1), and CO2/CH4 adsorption (8.6/1-11.0/1), and high thermal stabilities (up to 500 degrees C), thus showing a great potential in gas storage and separation applications.
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