A new nitrogen rich porous organic polymer for ultra-high CO2 uptake and as an excellent organocatalyst for CO2 fixation reactions

固氮 聚合物 固碳 固定(群体遗传学) 化学 二氧化碳 氮气 多孔性 有机聚合物 有机化学 生物化学 基因
作者
Avik Chowdhury,Sudip Bhattacharjee,Rupak Chatterjee,Asim Bhaumik
出处
期刊:Journal of CO2 utilization [Elsevier BV]
卷期号:65: 102236-102236 被引量:29
标识
DOI:10.1016/j.jcou.2022.102236
摘要

The steady increase in the carbon dioxide (CO 2 ) concentration in the atmosphere is causing serious environmental threats like global warming and climate change. Thus to mitigate this issue, suitable adsorbent cum catalyst for high CO 2 capture and its fixation to reactive organics is very much essential. In this context, we have synthesized a new porous cross-linked organic polymer DAT-1 through the radical polymerization of divinylbenzene, triallylamine and 2,4,6-tris(allyloxy)− 1,3,5-triazine. DAT-1 possesses high degree of flexibility, with exceptionally large BET surface area (1105 m 2 g −1 ) along with bimodal porosity. Furthermore, due to the presence of triazine unit along with tertiary amine moieties inside the porous architecture of DAT-1 with very rich in basic N-sites could make it as an excellent adsorbent for the unprecedented CO 2 capture (73.3 mmol g −1 at 30 bar pressure / 273 K). Further, it exhibits excellent catalytic activity for the conversion of simple terminal epoxides to bio-derived sterically hindered epoxides to cyclic carbonate by utilizing carbon dioxide as C1 resource. Basicity associated with N-rich sites at the surface of the high surface area porous organic polymer is responsible for record CO 2 capture and its excellent catalytic activity for the CO 2 fixation on epoxides for the synthesis of value added cyclic carbonates. We report a new porous organic polymer with record high CO 2 capture (73.3 mmol g −1 at 30 bar pressure / 273 K). Further, it exhibits excellent catalytic activity for the conversion of epoxides to respective cyclic carbonates by utilizing CO 2 as C1 resource. • A new porous organic polymer DAT-1 has been synthesized through the polymerization of three olefines. • DAT-1 possesses exceptionally large BET surface area (1105 m 2 g −1 ) along with bimodal porosity. • DAT-1 displayed unprecedented CO 2 capture (73.3 mmol g −1 at 30 bar pressure / 273 K). • DAT-1 showed excellent catalytic activity for the synthesis of cyclic carbonates via cycloaddition of CO2 on epoxides. • Basicity due to N-rich sites and high surface area are responsible for record CO 2 capture and high catalytic activity.
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