摘要
铜基层状双氢氧化物(Cu-LDHs)是一种由正电荷层板和层间负电荷阴离子构成的层状化合物,以其卓越的离子交换性、可调节的层间结构、独特的记忆效应、优异的催化活性和良好的热稳定性,在脱硝领域展现出巨大的应用潜力.因此,本文综述了Cu-LDHs衍生物催化剂在脱硝技术中的应用进展,从金属掺杂、载体负载和阴离子调控等多个角度,对Cu-LDHs衍生物SCR催化剂的类型进行了系统分类.探讨了Cu-LDHs衍生物在SCR系统中NH_(3)、CO和C_(3)H_(6)作为还原剂的反应机制.此外,详细阐述了Cu-LDHs衍生物催化剂在抗硫性能、抗水热老化性能和抗碱金属中毒性能方面的强化策略,旨在通过综合手段增强催化剂的稳定性和耐用性.最后,对Cu-LDHs衍生物的未来研究方向进行了前瞻性展望.
Copper-based layered double hydroxides(Cu-LDHs)are layered compounds composed of positively charged lamels and interlayer negative anions.With their excellent ion exchange properties,adjustable interlayer structure,unique memory effect,excellent catalytic activity and good thermal stability,they show great application potential in the field of denitrification.In this paper,the application progress of Cu-LDHs derivative catalysts in denitrification technology was reviewed.The types of SCR catalysts for Cu-LDHs derivatives were systematically classified from the perspectives of metal doping,carrier loading and anion regulation.The reaction mechanism of NH_(3),CO and C_(3)H_(6) as reducing agents in SCR system of Cu-LDHs derivatives was investigated.In addition,the strengthening strategy of the Cu-LDHs derivative catalyst in the aspects of sulfur resistance,hydrothermal aging resistance and alkali metal poisoning resistance was described in detail,aiming to enhance the stability and durability of the catalyst by comprehensive means.Finally,the future research direction of Cu-LDHs derivatives is prospectively prospected.
作者
张巍
张凯凯
宋权斌
尹艳山
成珊
宣艳妮
阮敏
刘涛
周昭仪
姚志豪
李丹聪
ZHANG Kai-kai;SONG Quan-bin;YIN Yan-shan;CHENG Shan;XUAN Yan-ni;RUAN Min;LIU Tao;ZHOU Zhao-yi;YAO Zhi-hao;LI Dan-cong(School of Energy and Power Engineering,Changsha University of Science and Technology,Changsha 410114,China;Renewable Energy Power Technology Key Laboratory of Hunan Province,Changsha 410114,China)
出处
《中国环境科学》
北大核心
2025年第10期5435-5447,共13页
China Environmental Science
基金
国家自然科学基金资助项目(52006016)
湖南省自然科学基金资助项目(2023JJ30047,2021JJ40573,2020JJ4098,2025JJ60890)
湖南省教育厅科学研究重点项目(21A0216)
湖南省教育厅优秀青年项目(202B041,22B0291)
长沙市自然科学基金资助项目(kq2014104)
长沙理工大学青年教师成长计划项目(2019QJCZ044)。
