Sulfonate-grafted porous polymer networks for preferential CO(2) adsorption at low pressure

Authors
  • W. Lu
  • D. Yuan
  • J. Sculley
  • D. Zhao
Publication date 2011
Journal Journal of the American Chemical Society
Volume | Issue number 133 | 45
Pages (from-to) 18126-18129
Organisations
  • Faculty of Science (FNWI) - Van 't Hoff Institute for Molecular Sciences (HIMS)
Abstract
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/N2 ratio at 295 K and 1 bar revealed that the sulfonate-grafted PPN-6 networks show exceptionally high adsorption selectivity for CO2 over N2 (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.
Document type Article
Language English
Published at https://doi.org/10.1021/ja2087773
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