Porphyrinic Porous Aromatic Frameworks for Carbon Dioxide Adsorption and Separation
Jierui Yang, Huiting Qiu, Long Huang, Shuang Meng, Yunhui Yang
Abstract
Abstract The capture of carbon dioxide (CO 2 ) from industrial process emissions is increasingly important for the mitigation and prevention of the disruptive effects of global warming. In this study, PAF (porous aromatic frameworks)‐TPB(1,3,5‐triphenylbenzene) and three‐dimensional PAF‐TPM (tetraphenylmethane) porphyrin‐based aromatic porous materials were synthesized through the Scholl reaction. The CO 2 and N 2 adsorption isotherms at 273 K and 298 K were studied to determine the performance in carbon dioxide capture at flue gas conditions. There is a significant difference in the adsorption capacity of the two materials for CO 2 and N 2 , so they can be used for CO 2 /N 2 adsorption separation. PAF‐TPM has better CO 2 /N 2 separation at low pressure (150 mbar), while PAF‐TPB has the advantage of greater CO 2 /N 2 separation at high pressure (1 bar). It can be applied to CO 2 adsorption separation at low and high pressure, respectively. In particular, PAF‐TPB has a CO 2 /N 2 separation efficiency of up to 100.9 at 1 bar and 273 K. This work provides ideas for the design and synthesis of organic porous materials for the adsorption separation of CO 2 and N 2 .