Recently, microporous organic polymers, especially synthesized by hyper cross-linking from functionalized aromatic monomers, have shown to be effective for carbon capture and storage with considerable capacity and selectivity. Herein, a class of novel hyper cross-linking polymers (HCPs), based on green and renewable carbohydrates functionalized by various hydroxyl groups, was synthesized by Friedel−Crafts alkylation. These carbohydrate polymer, which have BET surface area around 800 m2g-1 can absorb about 4.3-6.9 wt% of CO2 with the CO2/N2 selectivity up to 64 at room temperature (298 K) by hydrogen bonding and dipole-quadrupole interaction. Furthermore, we experimentally and computationally studied the structures of carbohydrate backbones and determined several features, including quantity and reactivity of hydroxyl groups, and configurations of carbohydrate monomers, that governing their CO2 absorption ability, which sheds light on understanding the structure/function relationship and designing better CO2 separation materials.

Carbohydrate based hyper cross-linked organic polymers with –OH functional group for CO2 separation

249th National Meeting (2015)

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