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Azo-bridged covalent porphyrinic polymers (Azo-CPPs): synthesis and CO2 capture properties

机译:偶氮桥共价卟啉聚合物(Azo-CPPs):合成和CO2捕获性能

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摘要

A series of azo-bridged, aromatic, nitrogen-rich, microporous covalent porphyrinic polymers (Azo-CPPs) were synthesized through a metal catalyst-free direct coupling of a kind of tetranitro building block, 4NO(2)TPP, and several diamine or tetraamine compounds, under basic conditions. The Azo-CPPs were all amorphous and exhibited surface areas between 197 to 591 m(2) g(-1). The effect of building blocks on the pore properties was discussed. Meanwhile, the capacity of adsorption of CO2 for all the Azo-CPPs was studied and the CO2 uptake capacity was between 7.36% and 9.22% at 273 K and 1.10 bar. The CO2/N-2 selectivities were measured between 27.4-53.9 at 273 K and 31.2-107.8 at 303 K, respectively, showing an increase in selectivity with increasing temperature.
机译:通过无金属催化剂的四硝基结构单元,4NO(2)TPP和几种二胺或四胺的直接偶联,合成了一系列偶氮桥键,芳香族,富氮,微孔共价卟啉聚合物(Azo-CPPs)。四胺化合物,在碱性条件下。偶氮CPPs都是无定形的,并显示197至591 m(2)g(-1)之间的表面积。讨论了砌块对孔隙性能的影响。同时,研究了所有偶氮CPPs的CO 2吸附能力,在273 K和1.10 bar下的CO 2吸收能力在7.36%和9.22%之间。在273 K下测得的CO2 / N-2选择性介于303 K下的27.4-53.9和303 K下的31.2-107.8之间,表明选择性随温度升高而增加。

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