CAJ | 학술논문

源自固定源(如燃煤电厂烟气)和移动源(如机动车尾气)排放的氮氧化物(NOx)造成了严重的大气污染，对其进行减排控制已迫在眉睫。研究表明，氨选择性催化还原(NH3-SCR)技术是消除NOx的最有效手段之一。铈基催化剂因其良好的氧化还原性能、适当的表面酸性、较高的储/释氧容量以及丰富的资源储备而被广泛用于NH3-SCR反应。探讨铈基组分在该反应中发挥的具体作用，有助于了解相关催化过程的本质，为现有催化剂的优化和新型催化剂的设计提供科学参考。基于CeO2在NH3-SCR催化剂中扮演的不同角色，本文从CeO2作为载体、铈基复合氧化物、表面负载组分(助剂和活性组分)以及特殊结构的铈基催化剂等方面系统地介绍了近年来铈基催化剂在NH3-SCR反应中的最新研究进展，并对该领域未来可能的发展方向进行了展望。
원자고정원(여연매전엄연기)화이동원(여궤동차미기)배방적담양화물(NOx)조성료엄중적대기오염，대기진행감배공제이박재미첩。연구표명，안선택성최화환원(NH3-SCR)기술시소제NOx적최유효수단지일。시기최화제인기량호적양화환원성능、괄당적표면산성、교고적저/석양용량이급봉부적자원저비이피엄범용우NH3-SCR반응。탐토시기조분재해반응중발휘적구체작용，유조우료해상관최화과정적본질，위현유최화제적우화화신형최화제적설계제공과학삼고。기우CeO2재NH3-SCR최화제중분연적불동각색，본문종CeO2작위재체、시기복합양화물、표면부재조분(조제화활성조분)이급특수결구적시기최화제등방면계통지개소료근년래시기최화제재NH3-SCR반응중적최신연구진전，병대해영역미래가능적발전방향진행료전망。
Nitrogen oxides (NOx), which are emitted from stationary sources (such as coal-fired power plant flue gases) and mobile sources (such as motor vehicle exhausts), cause serious atmospheric pol ution. As a result, it is very important to control the emissions of NOx. Some studies have suggested that NH3-selective catalytic reduction (NH3-SCR) of NOx is one of the best techniques for this purpose. Ceria-based catalysts are widely used in the NH3-SCR reaction because of their good redox ability, suitable surface acidity, high oxygen storage or release capacity, and rich resource reserves. Investigating the role of ceria component in this reaction is important to understand the nature of the related catalytic process, and provides a valuable scientific reference for the optimization of existing catalysts and the design of novel catalysts. Based on the different roles of ceria in NH3-SCR catalysts, we have performed a systematic review of the latest research progress of ceria-based catalysts in the NH3-SCR reaction for the fol owing aspects:CeO2 used as supports, ceria-based mixed oxides, surface loading components (additives and active species), and ceria-based catalysts with special structures. Final y, we discuss the future directions of this field.