Highly microporous polymer-based carbons for CO2 and H2 adsorption†
Abstract
A series of microporous carbons has been obtained through carbonization and KOH activation of a commercially available styrene divinylbenzene resin with sulfonate functional groups, Amberjet 1200 H. The resulting carbons featured very high specific surface areas: from 725 m2 g−1 to 3870 m2 g−1, large total pore volumes: from 0.44 cm3 g−1 to 2.07 cm3 g−1, and exceptionally developed microporosity: from 0.2 cm3 g−1 to 1.16 cm3 g−1. The controlled activation process afforded high amounts of ultramicropores (micropores < 0.75 nm) reaching 0.32 cm3 g−1. Physisorption measurements showed very high uptakes of CO2 and H2 reaching 356 mg g−1 of CO2 (0 °C, 800 mmHg), 209 mg g−1 of CO2 (25 °C, 850 mmHg), and 39 mg g−1 of H2 (−196 °C, 850 mmHg).
Please wait while we load your content...
