The increased awareness of the catastrophic consequences caused by the accumulation of greenhouse gases into the atmosphere has generated a large mobilization aimed at CO₂ mitigation. Herein, in the spirit of the transformation of a waste as CO₂ into value added products, we propose an efficient preparation of two different hybrid systems based on aluminum chloride tetrastyrylporphyrin (TSP-Al-Cl) and 1,4-butanediyl-3,3′-bis-1-vinylimidazolium dibromide copolymerized in the presence (MWCNT-TSP-AlCl-imi) and in absence (TSP-AlCl-imi) of multi-walled carbon nanotubes (MWCNTs) for the CO₂ utilization in the synthesis of cyclic carbonates. The so-prepared materials have been thoroughly characterized by means of several spectroscopic and analytical techniques. The MWCNT-TSP-AlCl-imi heterogenous catalyst enabled the highly efficient chemical transformation of CO₂ and epoxides into cyclic carbonates with high turnover number (TON) and frequency (TOF) values at low temperature down to 30 °C in solvent-free conditions. MWCNT-TSP-AlCl-imi proved to be a very stable and reusable heterogeneous catalyst in consecutive cycles without the need of any reactivation procedure and no leaching phenomena. Furthermore, the optimal morphology of MWCNT-TSP-AlCl-imi, with the crosslinked polymer uniformly distributed onto MWCNTs backbone, resulted in a more active catalyst with a TON double than the unsupported one. The enhanced activity of MWCNT-TSP-AlCl-imi can be ascribed to its higher surface area that permits fully accessible catalytic sites. Interestingly, MWCNT-TSP-AlCl-imi also showed a catalytic activity comparable to a reference homogeneous catalytic system, proving that synergism occurred between the metal centers and the nucleophilic sites due to their close proximity.

对温室气体积累到大气中所造成的灾难性后果的认识不断提高，已经产生了旨在减少 CO ₂的大规模动员。在此，本着将废物作为 CO ₂转化为增值产品的精神，我们提出了一种基于氯化铝四苯乙烯基卟啉 (TSP-Al-Cl) 和 1,4-butanediyl-3 的两种不同混合系统的有效制备方法， 3'-bis-1-vinylimidazolium dibromide 在存在 (MWCNT-TSP-AlCl-imi) 和不存在 (TSP-AlCl-imi) 的多壁碳纳米管 (MWCNT) 的情况下共聚 CO ₂用于合成环状碳酸酯。如此制备的材料已通过多种光谱和分析技术进行了彻底的表征。_{MWCNT-TSP-AlCl-imi多相催化剂实现了CO 2}的高效化学转化在无溶剂条件下，在低至 30 °C 的低温下，环氧化物转化为具有高周转数 (TON) 和频率 (TOF) 值的环状碳酸酯。事实证明，MWCNT-TSP-AlCl-imi 在连续循环中是一种非常稳定且可重复使用的多相催化剂，无需任何再活化程序，也没有浸出现象。此外，MWCNT-TSP-AlCl-imi 的最佳形态，交联聚合物均匀分布在 MWCNTs 主链上，导致催化剂的活性更高，其 TON 比无载体催化剂高一倍。MWCNT-TSP-AlCl-imi 的增强活性可归因于其较高的表面积，允许完全接近的催化位点。有趣的是，MWCNT-TSP-AlCl-imi 也显示出与参考均相催化体系相当的催化活性，