多相催化中自由基及其反应的研究新进展  

Recent Progress in Free Radicals and Radical Reactions in Heterogeneous Catalysis

作　　者：田昊 徐冰君 TIAN Hao;XU Bingjun(College of Chemistry and Molecular Engineering,Peking University,Beijing 100871,China;Beijing National Laboratory for Molecular Sciences,Peking University,Beijing 100871,China)

机构地区：[1]北京大学化学与分子工程学院,北京100871 [2]北京分子科学国家研究中心,北京100871

出　　处：《复旦学报（自然科学版）》2022年第6期662-669,共8页Journal of Fudan University：Natural Science

基　　金：国家自然科学基金青年项目(22108006);中国博士后科学基金特别资助项目(2022T150009);中国博士后科学基金面上资助项目(2020M680239)。

摘　　要：多相催化的经典动力学模型是基于“吸附-反应”过程。当反应中间体在催化剂表面吸附较弱时,会发生脱附产生自由基,从而影响催化动力学,使其偏离经典的“吸附-反应”模型。本文以碳氢键活化以及碳碳键偶联的多相催化过程作为讨论对象,回顾了多相催化中自由基反应研究的历史,简要介绍了最新的检测自由基的实验手段,总结了当前研究对多相催化过程中自由基反应的认识。The classical kinetic model in heterogeneous catalysis is based on the “adsorption-reaction” process. When reaction intermediates are weakly adsorbed on the catalyst surface, they tend to desorb in the form of free radicals, which could make the observed kinetic behavior deviate from the “adsorption-reaction” model. This review provides a brief survey of research on free radical reactions in heterogeneous catalysis in the context of two model processes: carbon-hydrogen bond activation and carbon-carbon bond coupling. We also briefly cover the recent developments in experimental techniques capable of detecting free radicals, and summarize the current understanding of free radical reactions in heterogeneous catalysis.

关 键 词：多相催化 自由基 催化动力学 碳氢键活化 

分 类 号：O643.31[理学—物理化学]