期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 133, 期 45, 页码 18126-18129出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja2087773
关键词
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资金
- U.S. Department of Energy [DE-SC0001015, DE-FC36-07GO17033, DE-AR0000073]
- National Science Foundation [CBET-0930079]
- Welch Foundation [A-1725]
A porous polymer network (PPN) grafted with sulfonic acid (PPN-6-SO3H) and its lithium salt (PPN-6-SO3Li) exhibit significant increases in isosteric heats of CO2 adsorption and CO2-uptake capacities. IAST calculations using single-component-isotherm data and a 15/85 CO2/N-2 ratio at 295 K and 1 bar revealed that the sulfonate-grafted PPN-6 networks show exceptionally high adsorption selectivity for CO2 over N-2 (155 and 414 for PPN-6-SO3H and PPN-6-SO3Li, respectively). Since these PPNs also possess ultrahigh physicochemical stability, practical applications in postcombustion capture of CO2 lie well within the realm of possibility.
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