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<p>Functionalised hypercrosslinked polymers (HCPs) with
surface areas between 213 – 1124 m<sup>2</sup>/g based on a range of monomers
containing different chemical moieties are evaluated for CO<sub>2</sub> capture
using a pressure swing adsorption (PSA) methodology under humid conditions and
elevated temperatures. The networks demonstrated rapid CO<sub>2</sub> uptake
reaching maximum uptakes in under 60 seconds. The most promising networks demonstrating the
best selectivity and highest uptakes were applied to a pressure swing setup
using simulated flue gas streams. The carbazole, triphenylmethanol and
triphenylamine networks were found to be capable of converting a dilute CO<sub>2</sub>
stream (> 20 %) into a concentrated stream (> 85 %) after only two
pressure swing cycles from 20 bar (adsorption) to 1 bar (desorption). This work
demonstrates the ease by which readily synthesised functional porous materials
can be successfully applied to a pressure swing methodology and used to
separate CO<sub>2</sub> from N<sub>2</sub> from industrially applicable simulated
gas streams under more realistic conditions.</p>
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