Sulfonate-grafted porous polymer networks for preferential CO2 adsorption at low pressure

Weigang Lu; Daqiang Yuan; Julian Sculley; Dan Zhao; Rajamani Krishna; Hong-Cai Zhou

doi:10.1021/ja2087773

Sulfonate-grafted porous polymer networks for preferential CO2 adsorption at low pressure

J Am Chem Soc. 2011 Nov 16;133(45):18126-9. doi: 10.1021/ja2087773. Epub 2011 Oct 24.

Authors

Weigang Lu¹, Daqiang Yuan, Julian Sculley, Dan Zhao, Rajamani Krishna, Hong-Cai Zhou

Affiliation

¹ Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States.

PMID: 22007926
DOI: 10.1021/ja2087773

Abstract

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.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Adsorption
Carbon Dioxide / chemistry*
Nitrogen / chemistry
Polymers / chemistry*
Porosity
Pressure
Sulfonic Acids / chemistry*
Surface Properties

Substances

Polymers
Sulfonic Acids
Carbon Dioxide
Nitrogen