Ultralow Co Loading Phenanthroline‐based Porous Organic Polymer as a High‐efficient Heterogeneous Catalyst for the Fixation of CO<sub>2</sub> to Cyclic Carbonates at Ambient Conditions
Xiaofeng Zhang, Junhao Ding, Bo Qiu, Dajian Li, Yunpeng Bian, Dandan Zhu, Shimin Wang, Wenpeng Mai, Shujun Ming, Jian Chen, Tao Li
Abstract
Abstract The exploration of cost‐effective and efficient catalysts for the transformation of CO 2 into chemicals at room temperature and low CO 2 pressure is a key challenge. Here, a green synthesis method of porous organic polymer was developed, which was obtained by the Scholl coupling reaction via polycondensation of 1,3,5‐triphenylbenzene and 1,10‐phenanthroline at room temperature. The polymer has a large surface area (1074 m 2 g −1 ) and exhibited excellent CO 2 capture of 77.26 cm 3 g −1 at 273.15 K and 1.00 bar. After loading cobalt acetate, an ultralow Co loading phenanthroline‐based porous organic polymer was obtained with very high catalytic efficiency in TOF of 263 h −1 for the fixation of CO 2 to cyclic carbonates at room temperature and atmospheric with free‐solvent, which is over six‐fold than that of a molecular analogue, 1,10‐phenanthroline‐Co(OAc) 2 . This work provided a facile, powerful, green, and efficient strategy for designing porous organic polymers as high‐efficient heterogeneous catalysts in the fixation of carbon dioxide.