Sulfonate-grafted porous polymer networks for preferential CO2 adsorption at low pressure. Academic Article uri icon


  • A porous polymer network (PPN) grafted with sulfonic acid (PPN-6-SO(3)H) and its lithium salt (PPN-6-SO(3)Li) exhibit significant increases in isosteric heats of CO(2) adsorption and CO(2)-uptake capacities. IAST calculations using single-component-isotherm data and a 15/85 CO(2)/N(2) ratio at 295 K and 1 bar revealed that the sulfonate-grafted PPN-6 networks show exceptionally high adsorption selectivity for CO(2) over N(2) (155 and 414 for PPN-6-SO(3)H and PPN-6-SO(3)Li, respectively). Since these PPNs also possess ultrahigh physicochemical stability, practical applications in postcombustion capture of CO(2) lie well within the realm of possibility.

published proceedings

  • J Am Chem Soc

altmetric score

  • 6

author list (cited authors)

  • Lu, W., Yuan, D., Sculley, J., Zhao, D., Krishna, R., & Zhou, H.

citation count

  • 487

complete list of authors

  • Lu, Weigang||Yuan, Daqiang||Sculley, Julian||Zhao, Dan||Krishna, Rajamani||Zhou, Hong-Cai

publication date

  • November 2011