摘要
Abstract
Nitric oxide(NO)is one of the most hazardous pollutants in the atmosphere,posing a serious threat to human health and ecological environment.Traditional treatment methods show high energy consumption and poor economics.New technologies for the efficient conversion of NO to ammonia(NH3),which are in line with green sustainability,have received widespread attention.However,existing catalysts suffer from numerous problems like their insufficient reactivity,low selectivity,and poor stability.Numerous studies have found that modulation of the catalyst structure can improve these problems.Therefore,this paper reviews the research progress in the modulation strategies of catalysts for the synthesis of NH3 by reduction NO,and discusses the possible measures that can enhance the catalytic activity,such as energy band modification and electronic modulation,vacancy engineering,elemental doping,and amorphous engineering modulation,etc.,as well as the critical factors that influence the catalytic selectivity to NH3,such as the hydrogen bonding effect and single-atom/highly dispersed sites,etc.In addition,the metal-to-metal/support interactions and the confinement engineering,nano-engineering,and other strategies for strengthening the catalyst stability are also analyzed.Finally,this paper summarizes the challenges faced by this technology in practice and looks into the prospect of this technology in future application.关键词
一氧化氮还原/合成氨/催化剂/构效关系/结构调控Key words
nitric oxide reduction/ammonia synthesis/catalyst/structure-function relationship/structure regulation分类
化学化工
