硝基芳烃选择性加氢催化剂的研究进展

Progress on catalysts for selective hydrogenation of nitroarenes

苯胺类衍生物是一类重要的精细化工中间体,工业上主要通过硝基芳烃的催化加氢反应制备得到。然而,当硝基芳烃底物分子中存在卤素基团或其他可还原性基团时,极易发生过度加氢。针对此问题,高效和高选择性加氢催化剂的开发已成为研究的焦点内容。文章综述了近年来硝基芳烃选择性加氢催化剂的研究进展,重点介绍了不同种类的非均相催化剂及其改性策略,主要包括贵金属催化剂、非贵金属催化剂和无金属炭催化剂,同时总结了部分催化剂对不同类型硝基芳烃的选择性加氢性能。最后对该领域的研究情况进行了总结与展望。

Aniline derivatives are important intermediates of fine chemicals,which are generally prepared by catalytic hydrogenation of nitroarenes in industry.However,it is challenging to selectively hydrogenate nitro group when nitroarenes bear halogen or other reducible functional groups.Therefore,the development of selective hydrogenation catalysts becomes critical.This review summarizes recent advances of these catalysts with emphasis on heterogeneous catalytic systems and catalyst modification strategies including noble metal catalysts,non-noble metal catalysts and metal-free carbon catalysts.Selective hydrogenation performance of some catalysts for different nitroarenes are summarized.Latest and future development are introduced.