Innovation Team of Air Pollution Control, Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
Zhejiang Tiandi Environmental Protection Technology Co., Ltd., Hangzhou 310012, China.
Molecules. 2023 Jan 19;28(3):1024. doi: 10.3390/molecules28031024.
Carbon capture and storage (CCS) and carbon capture and utilization (CCU) are two kinds of strategies to reduce the CO concentration in the atmosphere, which is emitted from the burning of fossil fuels and leads to the greenhouse effect. With the unique properties of ionic liquids (ILs), such as low vapor pressures, tunable structures, high solubilities, and high thermal and chemical stabilities, they could be used as solvents and catalysts for CO capture and conversion into value-added chemicals. In this critical review, we mainly focus our attention on the tuning IL-based catalysts for CO conversion into quinazoline-2,4(1,3)-diones from -aminobenzonitriles during this decade (2012~2022). Due to the importance of basicity and nucleophilicity of catalysts, kinds of ILs with basic anions such as [OH], carboxylates, aprotic heterocyclic anions, etc., for conversion CO and -aminobenzonitriles into quinazoline-2,4(1,3)-diones via different catalytic mechanisms, including amino preferential activation, CO preferential activation, and simultaneous amino and CO activation, are investigated systematically. Finally, future directions and prospects for CO conversion by IL-based catalysts are outlined. This review is benefit for academic researchers to obtain an overall understanding of the synthesis of quinazoline-2,4(1,3)-diones from CO and -aminobenzonitriles by IL-based catalysts. This work will also open a door to develop novel IL-based catalysts for the conversion of other acid gases such as SO and HS.
碳捕集与封存（CCS）和碳捕集与利用（CCU）是减少大气中二氧化碳浓度的两种策略，二氧化碳是由化石燃料燃烧产生的，会导致温室效应。离子液体（ILs）具有独特的性质，如低蒸气压、可调节的结构、高溶解度、高热稳定性和化学稳定性，可作为溶剂和催化剂，用于 CO 的捕集和转化为高附加值的化学品。在这篇重要的综述中，我们主要关注在过去十年（2012 年至 2022 年）中，基于 IL 的催化剂在将 -氨基苯甲腈转化为喹唑啉-2,4(1,3)-二酮方面的调谐。由于催化剂的碱性和亲核性的重要性，我们研究了各种具有碱性阴离子的 IL，如 [OH]、羧酸盐、非质子杂环阴离子等，通过不同的催化机制，包括氨基优先活化、CO 优先活化和氨基和 CO 同时活化，将 CO 和 -氨基苯甲腈转化为喹唑啉-2,4(1,3)-二酮。最后，概述了基于 IL 的催化剂用于 CO 转化的未来方向和前景。这篇综述有助于学术研究人员全面了解基于 IL 的催化剂在 CO 和 -氨基苯甲腈合成喹唑啉-2,4(1,3)-二酮方面的应用。这项工作也为开发用于转化其他酸性气体（如 SO 和 HS）的新型基于 IL 的催化剂开辟了道路。
