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Adsorption-Induced Active Vanadium Species Facilitate Excellent Performance in Low-Temperature Catalytic NOx Abatement
Lian, Zhihua; Wei, Jie; Shan, Wenpo; Yu, Yunbo; Radjenovic, Petar M.; Zhang, Hua; He, Guangzhi; Liu, Fudong; Li, Jian-Feng; Tian, Zhong-Qun; He, Hong
2021-07-14
Source PublicationJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
ISSN0002-7863
Volume143Issue:27Pages:10454-10461
AbstractVanadia-based catalysts have been widely used for catalyzing various reactions, including their long- standing application in the deNO(x) process. It has been commonly considered that various vanadium species dispersed on supports with a large surface area act as the catalytically active sites. However, the role of crystalline V2O5 in selective catalytic reduction of NOx with NH3 (NH3-SCR) remains unclear. In this study, a catalyst with low vanadia loading was synthesized, in which crystalline V2O5 was deposited on a TiO2 support that had been pretreated at a high temperature. Surprisingly, the catalyst, which had a large amount of crystalline V2O5, showed excellent lowtemperature NH3-SCR activity. For the first time, crystalline V2O5 on low-vanadium-loading catalysts was found to be transformed to polymeric vanadyl species by the adsorption of NH6(3). The generated active polymeric vanadyl species played a crucial role in NH3-SCR, leading to remarkably enhanced catalytic performance at low temperatures. This new finding provides a fundamental understanding of the metal oxide-catalyzed chemical reaction and has important implications for the development and commercial applications of NH3-SCR catalysts.
Department水污染控制实验室
WOS Research AreaChemistry, Multidisciplinary
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/46015
Collection水污染控制实验室
Affiliation1.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Fujian, Peoples R China
2.Chinese Acad Sci, Key Lab Urban Pollutant Convers, Inst Urban Environm, Xiamen 361021, Fujian, Peoples R China
3.Xiamen Univ, Coll Chem & Chem Engn, Coll Mat,Coll Energy, State Key Lab Phys Chem Solid Surfaces,Collaborat, Xiamen 361005, Fujian,
4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Univ Cent Florida, NanoSci Technol Ctr NSTC, Dept Civil Environm & Construct Engn, Catal
Recommended Citation
GB/T 7714
Lian, Zhihua,Wei, Jie,Shan, Wenpo,et al. Adsorption-Induced Active Vanadium Species Facilitate Excellent Performance in Low-Temperature Catalytic NOx Abatement[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2021,143(27):10454-10461.
APA Lian, Zhihua.,Wei, Jie.,Shan, Wenpo.,Yu, Yunbo.,Radjenovic, Petar M..,...&He, Hong.(2021).Adsorption-Induced Active Vanadium Species Facilitate Excellent Performance in Low-Temperature Catalytic NOx Abatement.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,143(27),10454-10461.
MLA Lian, Zhihua,et al."Adsorption-Induced Active Vanadium Species Facilitate Excellent Performance in Low-Temperature Catalytic NOx Abatement".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 143.27(2021):10454-10461.
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