Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, West Bengal 741246, India.
Dalton Trans. 2022 Feb 1;51(5):1918-1926. doi: 10.1039/d1dt03821d.
Utilization of carbon dioxide by converting it into value-added chemicals is a sustainable remedy approach that stipulates abundant, cheap, non-toxic and efficient catalytic materials. In this study, we have demonstrated the use of -aminobenzoic acid-capped hematite (PABA@α-FeO) as an efficient nanocatalyst for the conversion of epoxides to cyclic carbonates utilizing CO. The developed PABA@α-FeO nanocatalyst along with a cocatalyst, tetrabutylammonium iodide (TBAI), was able to convert a variety of epoxide substrates into their corresponding cyclic carbonates under atmospheric pressure and solvent-free conditions. The efficient catalytic activity of the material is attributed to the synergistic effect between α-FeO and the amine group of the PABA molecule present on the surface. Furthermore, the recyclability study and post-catalytic analysis revealed that the developed catalyst can be used for multiple catalytic cycles due to the stable and robust nature of the nanocatalyst. The choice of the PABA@α-FeO nanocatalyst is indeed a sustainable approach from the CO capture and utilization point of view.
将二氧化碳转化为高附加值化学品的利用是一种可持续的补救方法，它规定了丰富、廉价、无毒和高效的催化材料。在这项研究中，我们已经证明了 -氨基苯甲酸封端的赤铁矿 (PABA@α-FeO) 作为一种有效的纳米催化剂，可利用 CO 将环氧化物转化为环状碳酸酯。所开发的 PABA@α-FeO 纳米催化剂与助催化剂四丁基碘化铵 (TBAI) 一起，能够在常压和无溶剂条件下将各种环氧化物底物转化为相应的环状碳酸酯。该材料的高效催化活性归因于 α-FeO 与表面上存在的 PABA 分子的胺基之间的协同作用。此外，由于纳米催化剂的稳定和坚固性质，进行了可回收性研究和催化后分析，表明开发的催化剂可以用于多个催化循环。从 CO 捕获和利用的角度来看，选择 PABA@α-FeO 纳米催化剂确实是一种可持续的方法。
