摘要
为有效提高负载型催化剂中贵金属的原子利用效率,贵金属单原子催化剂逐渐成为一个研究热点和前沿课题.我们针对单原子催化剂在催化氧化领域中的应用,综述了几种贵金属单原子催化剂的典型制备方法,包括原子层沉积法、湿法化学法、光化学辅助法、热解法等,并讨论了上述方法的优缺点.此外,对比传统贵金属负载型催化剂,我们重点讨论了贵金属基单原子催化剂在CO催化氧化、挥发性有机化合物(VOCs)催化氧化、催化机理等催化氧化过程中的最新研究进展,尤其是贵金属基单原子催化剂在低温低浓度催化氧化过程中表现出的优异催化活性、抗水性和抗毒性,表明该类催化剂具备极大的工业应用潜力.最后,进一步从大规模工业应用角度探讨了单原子催化剂目前面临的挑战和可能的解决办法,期望可以为应用于催化氧化过程的高效、稳定的单原子催化剂的设计提供思路.
In order to improve the utilization efficiency of noble metal atoms in supported catalysts,noble metal single-atom catalyst(NM-SAC)is becoming a research hotspot and frontier subject.Aiming at the applications of NM-SACs in the field of catalytic oxidation,this review summarizes several typical synthesis methods of NM-SACs,including atomic layer deposition,wet chemical methods,photochemical assisted methods,and pyrolysis methods,on top of the discussion about their advantages and disadvantages.In addition,this review focuses on the latest research progress of NM-SACs applied in the catalytic oxidation of CO and volatile organic compounds(VOCs),in comparison with traditional noble metal supported catalysts,where the NM-SACs have exhibited excellent catalytic activity,water resistance and anti-toxicity even in presence of low gas concentration and low temperature.And thus,this seemingly corroborates the great industrialization potential of NM-SACs in catalytic oxidation.Finally,this review further discusses the current challenges and possible solutions for single-atom catalysts from the perspective of large-scale industrial applications,hoping to provide insights into the design of efficient and stable NM-SACs for catalytic oxidation processes.
作者
刘玉凤
周瑛
卢梅
耿俊
徐鑫
柯权力
卢晗锋
LIU Yu-feng;ZHOU Ying;LU Mei;GENG Jun;XU Xin;KE Quan-li;LU Han-feng(College of Chemical Engineering,Institute of Catalytic Reaction Engineering,Zhejiang University of Technology,Hangzhou 310014,China;Zhejiang Environmental Technology Co.,Ltd,Hangzhou 311121,China)
出处
《分子催化》
CAS
CSCD
北大核心
2022年第1期81-97,共17页
Journal of Molecular Catalysis(China)
基金
浙江省自然科学基金重点项目(LZ21E080001)
国家自然科学基金(22078294)
国家自然科学基金(21676255)
浙江省公益技术项目(LGF20E080018)
关键词
贵金属
单原子催化剂
制备方法
催化氧化
催化机理
noble metal
single-atomcatalyst
synthesis routes
catalytic oxidation
catalytic mechanism
作者简介
刘玉凤(1995-),女,硕士研究生,主要从事贵金属基VOCs催化燃烧研究;通讯联系人:卢晗锋,E-mail:luhf@zjut.edu.cn;通讯联系人:柯权力,E-mail:quanlike@zjut.edu.cn.
