A new synthetic strategy of Aluminium(III)-porphyrin-based conjugated microporous polymers with efficient CO2 catalytic conversion at ambient conditions

• Published in: Fuel (Guildford) 2023-01, Vol.331, p.125828, Article 125828
• Main Authors: Zhang, Xiaofeng, Zhang, Hengfei, Qiu, Bo, Zhu, Dandan, Zhang, Sheng, Bian, Yunpeng, Wang, Junhong, Li, Dajian, Wang, Shimin, Mai, Wenpeng, Chen, Jian, Li, Tao
• Format: Article
• Language: English
• Subjects: Carbon dioxide; Cyclic carbonate; Cycloaddition reaction; Heterogeneous catalysis; Porous organic polymer
• ISSN: 0016-2361; 1873-7153
• DOI: 10.1016/j.fuel.2022.125828

[Display omitted] •The novel Al-Por-POPs catalysts were obtained by a one-step synthesis strategy.•These systems used very low catalyst loading and showed a high recyclability (up to 10 times).•Even using dilute CO2 (15 % CO2 in N2), TOF up to 27 h−1 could be afforded under ambient conditions by Al-Por-POP-2. The conversion of CO2 cycloaddition to value-added cyclic carbonates is of considerable interest owing to the renewable greenhouse gas and 100 % atomic economy. However, it is still a big challenge to develop low-cost and high-efficient catalysts. Here, we report a facile design way, in a single step, for the creation of robust catalytic nanoreactors for heterogeneous catalyst in the cycloaddition of CO2 to cyclic carbonates. The Al(III)-porphyrin-based porous organic polymer catalysts exhibited remarkably high efficiency for propylene carbonate with turnover frequencies of up to 443.6 h−1 at room temperature and atmospheric pressure without solvent, which notably surpasses most previously reported heterogeneous catalysts and relevant homogeneous catalysts. Even using dilute CO2 (15 % CO2 in N2), a TOF up to 27.0 h−1 could be afforded under ambient conditions (25 °C, 1 bar) by Al-Por-POP-2, which showed high stability for recyclability up to 10 times without a significant decrease. These studies provided a simple and efficient synthetic strategy infavorof mass production and future industrial application for the cycloaddition of CO2 with low cost and high efficiency.