二氧化碳既是温室气体的主要成分又是储量丰富且可再生的碳资源,研究二氧化碳的化学转化和利用有着重要意义。基于二氧化碳与催化剂的弱相互作用以及催化活化原理,通过采用环境友好的反应介质(如高密度二氧化碳、聚乙二醇等)及催化剂的设计、分离和循环利用等策略,设计并合成了单组分和双组分的功能化高效催化剂用于合成有机碳酸酯、脲、噁唑啉酮和喹唑啉二酮类化合物,并相应建立了具有重要工业应用价值的合成新方法以及环境友好的新工艺。以二氧化碳为合成子的精细化工中间体合成不但丰富了有机化学的合成方法学,也为解决日渐严重的环境问题提供潜在的新方法。在此,对本课题组近二年来在二氧化碳化学尤其是二氧化碳催化转化方法方面的研究成果做一小结。
Carbon dioxide is the main greenhouse gas,which calls for highly concern as the cutthroat for the global warming.On the other hand,it provides a renewable C1 carbon source for sustainable society,due to its unexhausted,non-toxic and easily available from synthetic point of view.This makes carbon dioxide as an industrially useful building block for value-added fuels and chemicals,for instance,organic carbonates,ureas,oxazolidinones and quinazolidinones.Great efforts have been directed towards constructing C-C,C-O and C-N bond on the basis of CO2 activation through molecular catalysis owing to its kinetic and thermodynamic stability.The most results presented herein could be based on our recent research work on CO2 chemistry since 2009.The solvent-free and/or self-catalyzed processes are also available for the above transformations.