Sulfonate-Grafted Porous Polymer Networks for Preferential CO2 Adsorption at Low Pressure

• Published in: Journal of the American Chemical Society Vol. 133; no. 45; pp. 18126 - 18129
• Main Authors: Lu, Weigang, Yuan, Daqiang, Sculley, Julian, Zhao, Dan, Krishna, Rajamani, Zhou, Hong-Cai
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 16.11.2011
• Subjects: Adsorption; Carbon Dioxide - chemistry; Nitrogen - chemistry; Polymers - chemistry; Porosity; Pressure; Sulfonic Acids - chemistry; Surface Properties

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 r...